Friday, 31 March 2017

Computer Science Internationalization - Adaptive URL

A URL can consist of a Domain Name and a pathname. In the examples below x.y.z represents the Domain Name, the remainder being the pathname. My experience of the internet is that the pathname is usually written in English or more accurately ASCII. The below ASCII pathname represents a multi-page website in the form of a journey from home to a hotel in Korea.

x.y.z/home/bus/airplane/korea/taxi/hotel

Websites, such as Google, adapt the language of their text content according to the browser preferred display language (BL). This browser preferred language can be set by the user. Letʼs go one step further than Google and adapt the language of the URL pathname according to the BL. Here is the ASCII pathname rewritten into Chinese, Japanese and Korean.

x.y.z/家/公共汽车/飞机/韩国/出租车/饭店

x.y.z/ホーム/バス/飛行機/韓国/タクシー/ホテル

x.y.z/홈/버스/비행기/한국/택시/호텔

So, how do we implement these language adaptive URL parthnames? Firstly, we need to programmatically determine the BL. One way of achieving this is to examine the Accept-Language http header sent from the browser to the server. This will contain one or more language tags. If there is more than one language tag they are presented in priority order. Language tags can take many forms. They include: zh, zh-CN and cmn for Mandarin Chinese; ja for Japanese and ko for Korean. Now that we can determine the BL we can select the appropriate URL pathname, thus internationalizing our website with a language adaptive URL pathname.

On a Linux machine, each component of the pathname will be a directory. In my schema I am assuming an index.html or index.php, per directory. A requirement of this schema is that we do not want a directory hierarchy for each language, nor do we want an index.html or index.php for each language.

My native language is English so I will make my master pathname directory names English ie home, bus, airplane, korea, taxi and hotel. I will make the Chinese, Japanese and Korean directory names as aliases to the English named master directories. This can be easily achieved on Linux with the ln -s command, where ln means link and the -s option means create symbolic link, as opposed to a hard link.

ln -s home 家
ln -s home ホーム
ln -s home 홈

ln -s hotel 饭店
ln -s hotel ホテル
ln -s hotel 호텔

What if your native language is not English? In that case, create the master pathname directory names in your native language. If your native language is Korean then the master directory names will be 집, 버스, 비행기, 한국, 택시 and 호텔 and your links will be:

ln -s 홈 home
ln -s 홈 家
ln -s 홈 ホーム

ln -s 호텔 hotel
ln -s 호텔 饭店
ln -s 호텔 ホテル

Emoji are hugely popular so letʼs construct a totally cool Emoji pathname.

x.y.z/🏡/🚌/🛩/🇰🇷/🚕/🏨

ln -s home 🏡
ln -s bus 🚌
ln -s airplane 🛩
ln -s korea 🇰🇷
ln -s taxi 🚕
ln -s hotel 🏨

I have never encountered an Emoji URL pathname on a website and so implementing such a pathname on your website would be both totally cool and unique. You could also use an Emoji pathname for those languages your website does not support. My schema only supports Chinese, English, Japanese and Korean. If the BL was an unsupported language, such as Arabic, then the Emoji pathname could be displayed in the browser address bar instead of, for example, defaulting to English.

I have used x.y.x to represent the Domain Name, the implication being it is ASCII. We can complete the language adaptive equation by having Domain Names in supported BL languages. Thus my completed equation schema would have Chinese, Japanese and Korean Domain Names in addition to an ASCII Domain Name.

Friday, 17 March 2017

Computer Science Internationalization - EAI

As I stated in schappo.blogspot.co.uk/2017/01/chinese-email-address.html both DataMail and Google mail support Email Address Internationalization (EAI). DataMail provides a complete EAI service which includes both support and creation of Internationalized email addresses. Google Mail provides a partial EAI service, in that, it supports EAI but does not yet provide for creation of internationlized email accounts with internationalized email addresses. Thus organisations using Google Mail have an advantage over those organisations having an ASCII addresses only email service and have a head start in provision of a complete EAI service.

Given the Domain name of an organisation, the Unix host command can be used to determine the mail service provider. Here are some of the organisations using Google Mail:

苹果电脑 ~: host spotify.com
spotify.com has address 194.132.198.198
spotify.com has address 194.132.197.198
spotify.com has address 194.132.198.149
spotify.com mail is handled by 10 ASPMX3.GOOGLEMAIL.com.
spotify.com mail is handled by 1 ASPMX.L.GOOGLE.com.
spotify.com mail is handled by 10 ASPMX2.GOOGLEMAIL.com.
spotify.com mail is handled by 5 ALT2.ASPMX.L.GOOGLE.com.
spotify.com mail is handled by 10 ASPMX5.GOOGLEMAIL.com.
spotify.com mail is handled by 5 ALT1.ASPMX.L.GOOGLE.com.
spotify.com mail is handled by 10 ASPMX4.GOOGLEMAIL.com.
苹果电脑 ~: host twitter.com
twitter.com has address 104.244.42.129
twitter.com has address 104.244.42.1
twitter.com mail is handled by 30 aspmx3.googlemail.com.
twitter.com mail is handled by 10 aspmx.l.google.com.
twitter.com mail is handled by 20 alt1.aspmx.l.google.com.
twitter.com mail is handled by 30 aspmx2.googlemail.com.
twitter.com mail is handled by 20 alt2.aspmx.l.google.com.
苹果电脑 ~: host mixi.jp # ミクシィ
mixi.jp has address 52.198.59.66
mixi.jp has address 54.92.71.226
mixi.jp has address 52.198.89.90
mixi.jp mail is handled by 30 aspmx2.googlemail.com.
mixi.jp mail is handled by 10 aspmx.l.google.com.
mixi.jp mail is handled by 20 alt2.aspmx.l.google.com.
mixi.jp mail is handled by 20 alt1.aspmx.l.google.com.
mixi.jp mail is handled by 30 aspmx3.googlemail.com.
苹果电脑 ~: host bristol.ac.uk # University of Bristol
bristol.ac.uk has address 137.222.0.38
bristol.ac.uk mail is handled by 5 ALT1.ASPMX.L.GOOGLE.COM.
bristol.ac.uk mail is handled by 10 ASPMX2.GOOGLEMAIL.COM.
bristol.ac.uk mail is handled by 1 ASPMX.L.GOOGLE.COM.
bristol.ac.uk mail is handled by 10 ASPMX3.GOOGLEMAIL.COM.
bristol.ac.uk mail is handled by 5 ALT2.ASPMX.L.GOOGLE.COM.
苹果电脑 ~: host bathspa.ac.uk # Bath Spa University
bathspa.ac.uk has address 194.83.160.0
bathspa.ac.uk has address 162.13.24.154
bathspa.ac.uk has address 72.47.217.0
bathspa.ac.uk mail is handled by 10 ALT4.ASPMX.L.GOOGLE.COM.
bathspa.ac.uk mail is handled by 5 ALT2.ASPMX.L.GOOGLE.COM.
bathspa.ac.uk mail is handled by 1 ASPMX.L.GOOGLE.COM.
bathspa.ac.uk mail is handled by 5 ALT1.ASPMX.L.GOOGLE.COM.
bathspa.ac.uk mail is handled by 10 ALT3.ASPMX.L.GOOGLE.COM.
Providing a full EAI service involves going beyond ASCII. It entails supporting Unicode email addresses. Unicode email addresses such as my Chinese email 小山@电邮.在线

Tuesday, 31 January 2017

Computer Science Internationalization - Unicode Terminal Session

Below is an OSX bash shell command line terminal session. It is a real, working terminal session using basic unix commands. It does, though, look significantly different from a standard terminal session. If you know basic unix commands such as ls and cd, you should/may be able to work out what is happening.

苹果电脑 ~: 妈 我的目录
苹果电脑 ~: 茶 我的目录
苹果电脑 我的目录: 丽
苹果电脑 我的目录: 头 文档一 文档二 文档三
苹果电脑 我的目录: 丽
文档一  文档三  文档二
苹果电脑 我的目录: 词 > 文档四
一
二
三
四
五
六
苹果电脑 我的目录: 词 文档四
一
二
三
四
五
六
苹果电脑 我的目录: 丽
文档一  文档三  文档二  文档四
苹果电脑 我的目录: ⇉ 文档四 文档五
苹果电脑 我的目录: 丽
文档一  文档三  文档二  文档五  文档四
苹果电脑 我的目录: → 文档一 文档六
苹果电脑 我的目录: 丽
文档三  文档二  文档五  文档六  文档四
苹果电脑 我的目录: 

So, what is happening!?

Firstly I am using Unicode characters. If you search the internet you will find many examples of terminal sessions but they will invariably be using ASCII characters only. In my above terminal session I am using Unicode characters, mostly Chinese/Japanese and two arrow symbol characters.

Where are the commands such as ls and cd? I have mapped a set of commands to Unicode characters using the alias command eg alias 丽='ls'

I have changed the command line prompt.

If you understand basic bash commands, I believe I have now given you sufficient information in order for you to work out what is happening in the terminal session. Knowing Chinese or Japanese gives a slight advantage but it is not essential to understanding this terminal session. The Chinese/Japanese characters I chose for the command mappings are somewhat random so it will not help you to google translate them.

I actually devised these command mappings and the terminal session several years ago. Today, I decided it was time to put it onto my blog. My main purpose was and still is, to encourage students to think beyond ASCII. I believe it has impact because it is so unexpected when one first sees this terminal session.

There can be many different permutations on the session using different human language scripts and unicode symbols. It makes for an interesting and unusual exercise for students studying unix. Absolutely no reason why one should not, for example, use emoji for the command mappings.

Monday, 9 January 2017

Chinese Email Address

The latest and hottest news is that I now have a Chinese email address➜ 小山@电邮.在线 😄

  1. 小山 is my adopted Chinese name
  2. 电邮 means email
  3. 在线 means online

I acquired my free Chinese email address from DataMail which supports email addresses in twelve languages: العَرَبِيَّة‎‎ Arabic, বাংলা Bengali, 中文 Chinese, English, ગુજરાતી Gujarati, हिन्दी Hindi, मराठी Marathi, ਪੰਜਾਬੀ Punjabi, ру́сский Russian, தமிழ் Tamil, తెలుగు Telugu, اُردُو‎ Urdu.

Additionally, DataMail has an impressive family of IDNs (Internationalized Domain Names) with each language having itʼs own IDN.
  1. Arabic داده.امارات
  2. Bengali ডাটামেল্.ভারত
  3. Chinese 电邮.在线
  4. English datamail.in
  5. Gujarati ડાટામેલ.ભારત
  6. Hindi डाटामेल.भारत
  7. Marathi डेटामेल.भारत
  8. Punjabi ਡਾਟਾਮੇਲ.ਭਾਰਤ
  9. Russian почта.рус
  10. Tamil இந.இந்தியா
  11. Telugu డేటామెయిల్.భారత్
  12. Urdu ڈاٹامیل.بھارت

If you would like your own DataMail email address in one of the above languages then just click one of the above links. The website directs you to download an Android or iOS App. One uses the App to actually register a DataMail email address.

The main points in the registration process using the DataMail App are:

  1. The crucial part of this process is that firstly you need to select the language for the email address you are about to register. Subsequent instructions will be in the language you have selected. So, I chose Chinese in order to register 小山@电邮.在线.
  2. Validation of your phone number - the DataMail App will, with your approval, send an SMS text to DataMail in India to confirm your phone number. If the validation process fails, it could be that your phone contract does not cover the sending of international SMS text.
  3. Choosing the local-part which in my case is 小山. The Domain Name part is fixed and is provided by DataMail. There is a Domain Name per language, as above.

I have successfully exchanged emails between Gmail ASCII emails addresses and my DataMail Chinese email address. Gmail supports Internationalized Email Addresses (IEAs) but one cannot create IEAs in Gmail. DataMail, to my knowledge, is currently the only production email system that both supports and allows creation of IEAs. I used Gmail with a browser when testing exchange of IEAs. If you are accessing your Gmail using IMAP or POP then IEAs may or may not work. It all depends on whether or not your client software supports IEAs.

I have sent email from DataMail using my Chinese email address 小山@电邮.在线 to several Gmail users. My current experience is that for some of the Gmail users, my email goes to their spam folder instead of their primary inbox. If this is happening to you or your recipients, please mark the Gmail email as 'not spam' to help prevent reoccurrences of this problem.

In addition to the App, DataMail can be used with a web bowser ➜ 邮.电邮.在线

Currently, the few systems supporting internationalized email addresses are DataMail, Gmail and Outlook 2016. So, what to do when exchanging email with a system that only supports ASCII email addresses? DataMail have thought about this issue and offer email aliasing. One can create ASCII email aliases and use them to exchange email with systems that do not yet support international email addresses. My DataMail mailbox has the Chinese email address 小山@电邮.在线 and ASCII @datamail.in addresses thus allowing me to communicate with any email system.

DataMail is a good example of an AI (Adaptive Internationalized) website. It adapts to the language of the web address used for access. The most obvious adaptation is the text content is in the language of the web address. Secondly, the appropriate language button is highlighted. Finally, and perhaps less obviously, in the top right corner there is a DataMail support email address which is in the current web address language. In the case of 电邮.在线 the DataMail support email address is 支持@电邮.在线

Letʼs examine some of the technicalities of EAI (Email Address Internationalization). The structure of an email address is local-part@Domain Name where the Domain Name identifies a mail server and local-part identifies a mailbox on said mail server. The email addresses you will be most familiar with are ASCII local-part@ASCII Domain Name. IEAs, on the other hand, are of the form Unicode local-part@Unicode Domain Name. In order to make this form work we need to encode both parts with one encoding for the Unicode local-part and a different encoding for the Unicode Domain Name. The encoded email address is UTF-8@punycode. Users see the Unicode email address and Computers work with the encoded address.

For further technical reading, these are the primary EAI RFCs:

  1. tools.ietf.org/html/rfc6531
  2. tools.ietf.org/html/rfc6532
  3. tools.ietf.org/html/rfc6533
  4. tools.ietf.org/html/rfc6534

Thursday, 15 December 2016

grep highlighting

I frequently use grep to demonstrate and explain regular expressions (regex). I use it in interactive mode with the input coming from the keyboard and the output going to the screen. So, I type some string and if grep finds a match this input string is echoed to the screen. If no match is found then this input string is not echoed to the screen. I have used this teaching method for many years.

Recently, whilst using CentOS, I discovered that grep can highlight matched strings. The CentOS machine I used was setup with grep highlighting which is how I discovered it. I was impressed as it makes it clear exactly which text is matched.

My Mac OSX does not have grep highlighting with the default settings. I therefore decided to configure my OSX system so it does highlight grep matches as it is so useful. Rather than having to repeatedly type the relevant grep otions on the command line, I put them into my .bash_profile, as follows.

export GREP_OPTIONS='--color=auto'
export GREP_COLOR='1;34' # 1=bold; 34=blue

I now give a grep terminal session extract which illustrates non matching and matching.

苹果电脑 ~: egrep '노팅엄'
안산 안양 부산 구미 제주 포항 양산
안산 안양 부산 노팅엄 구미 제주 포항 양산
안산 안양 부산 노팅엄 구미 제주 포항 양산

The text used in this terminal session is Korean Hangeul. Each word is a Korean city, apart from 노팅엄 which is Nottingham, a city in England. The Korean cities are: 안산 Ansan, 안양 Anyang, 부산 Busan, 구미 Gumi, 제주 Jeju, 포항 Pohang and 양산 Yangsan.

Note: I use egrep as it is short form for grep -E which enables extended regular expressions.

Environment: OSX Sierra v10.12.1

Saturday, 26 November 2016

Domain Name Registrations

To keep up to date with Domain Name registrations I highly recommend gd-domains. It gives listings of newly registered Domain Names on a daily basis. Listings for individual TLDs (Top Level Domains) are available. It is thanks to this site that I discovered the below impressive and sizeable family of Korean Domain Names. They were registered on 11th and 22nd November 2016. The TLD used is 닷컴 which is Verisign's Korean equivalent to com.

I think embedding telephone numbers into these IDNs (Internationalized Domain Names) is clever marketing ☎️

  1. 남양주용달이사-010-3126-0853.닷컴
  2. 원룸반포장이사-010-3126-0853.닷컴
  3. 마포포장이사-010-3126-0853.닷컴
  4. 강동구이사-010-3126-0853.닷컴
  5. 강서구포장이사-010-3126-0853.닷컴
  6. 광진구원룸이사-010-3126-0853.닷컴
  7. 광진구이사짐센터-010-3126-0853.닷컴
  8. 송파구포장이사-010-3126-0853.닷컴
  9. 중랑구원룸이사-010-3126-0853.닷컴
  10. 서초구원룸이사-010-3126-0853.닷컴
  11. 송파구용달센터-010-3126-0853.닷컴
  12. 학생이사-010-3126-0853.닷컴
  13. 사당동원룸이사-010-3126-0853.닷컴
  14. 지방용달가격-010-3126-0853.닷컴
  15. 싼곳용달이사-010-3126-0853.닷컴
  16. 마포용달이사-010-3126-0853.닷컴
  17. 반포장이사-010-3126-0853.닷컴
  18. 서울일반이사-010-3126-0853.닷컴
  19. 1톤트럭이사-010-3126-0853.닷컴
  20. 1톤소형이사-010-3126-0853.닷컴
  21. 1톤용달-010-3126-0853.닷컴
  22. 서울1톤용달-010-3126-0853.닷컴
  23. 원룸포장이사-010-3126-0853.닷컴
  24. 원룸이사가격-010-3126-0853.닷컴
  1. 마포원룸이사-010-4675-2414.닷컴
  2. 강동구용달이사-010-4675-2414.닷컴
  3. 강서구용달이사-010-4675-2414.닷컴
  4. 강동구지역이사-010-4675-2414.닷컴
  5. 서울개인용달이사-010-4675-2414.닷컴
  6. 광진구용달이사-010-4675-2414.닷컴
  7. 송파구원룸이사-010-4675-2414.닷컴
  8. 동작구용달이사-010-4675-2414.닷컴
  9. 중랑구용달이사-010-4675-2414.닷컴
  10. 송파구용달이사-010-4675-2414.닷컴
  11. 서초구용달이사-010-4675-2414.닷컴
  12. 서울소형이사-010-4675-2414.닷컴
  13. 오피스텔이사-010-4675-2414.닷컴
  14. 지방용달이사-010-4675-2414.닷컴
  15. 용산용달이사-010-4675-2414.닷컴
  16. 용달차이사-010-4675-2414.닷컴
  17. 합정동용달이사-010-4675-2414.닷컴
  18. 서울반포장이사-010-4675-2414.닷컴
  19. 서울경기용달차-010-4675-2414.닷컴
  20. 친절원룸이사-010-4675-2414.닷컴
  21. 원룸투룸-010-4675-2414.닷컴
  22. 원룸이사비용-010-4675-2414.닷컴
  23. 화물차용달-010-4675-2414.닷컴
  24. 용달이사견적-010-4675-2414.닷컴

www.gd-domains.com/20161111-229 is the link for 닷컴 registrations on 11th November 2016. www.gd-domains.com/20161122-229 is the direct link for all 닷컴 registrations on 22nd November 2016, 2016년 11월 22일 화요일.

Wednesday, 26 October 2016

Family of Korean IDNs

The following is a list of functioning Korean IDNs (Internationalized Domain Names). The TLD (Top Level Domain) used is 닷컴 which is Verisign's Korean language equivalent to their com TLD.

This family of Korean IDNs are concerned with Computer Repair 컴퓨터수리. The first two characters of the first 6 IDNs are names of Korean cities: 김포 Gimpo, 안양 Anyang, 용인 Yongin, 대구 Daegu, 파주 Paju, 성남 Seongnam. I think the first 2 characters of the next 2 IDNs are districts or neighbourhoods of 서울 Seoul: 용산 Yongsan, 종로 Jongno. The last one 일산 Ilsan, is a 동 neighbourhood of 고양 Goyang.

  1. 김포컴퓨터수리.닷컴
  2. 안양컴퓨터수리.닷컴
  3. 용인컴퓨터수리.닷컴
  4. 대구컴퓨터수리.닷컴
  5. 파주컴퓨터수리.닷컴
  6. 성남컴퓨터수리.닷컴
  7. 용산컴퓨터수리.닷컴
  8. 종로컴퓨터수리.닷컴
  9. 일산컴퓨터수리.닷컴

The following family of Korean IDNs all resolve to Fun Design website. I discovered this family at newly.domains/20171128-229 홈페이지제작 means home page creation. The first 2 Korean characters of the first 9 IDNs are Korean cities: 과천 Gwacheon, 광주 Gwangju, 대구 Daegu, 대전 Daejeon, 부산 Busan, 서울 Seoul, 수원 Suwon, 울산 Ulsan and 인천 Incheon. The last one, 분당 Bundang, I am less certain about. I think it is a district of 성남 Seongnam.

  1. 과천홈페이지제작.닷컴
  2. 광주홈페이지제작.닷컴
  3. 대구홈페이지제작.닷컴
  4. 대전홈페이지제작.닷컴
  5. 부산홈페이지제작.닷컴
  6. 서울홈페이지제작.닷컴
  7. 수원홈페이지제작.닷컴
  8. 울산홈페이지제작.닷컴
  9. 인천홈페이지제작.닷컴
  10. 분당홈페이지제작.닷컴

Friday, 7 October 2016

Computer Science Internationalization — Bidi

Scripts such as Latin are written from Left to Right (L➡︎R). Scripts such as Arabic and Hebrew are written Right to Left (L⬅︎R). What happens when we mix L➡︎R and L⬅︎R scripts within a document? Here is an exercise in mixing scripts.

Take a mixed bidi (bidirectional) string consisting of Latin and Hebrew characters in a L➡︎R paragraph.

abcאבגdef

...and here is the same string in a L⬅︎R paragraph.

abcאבגdef

Now to the actual exercise. Copy the above stings to your text editor or word processor. You will need to setup the 2nd occurrence of the string as a L⬅︎R paragraph. I am assuming that your directionality is L➡︎R by default. Each string has two boundaries where the text changes direction. For each boundary you are going to insert a character, either a L➡︎R, such as x, or a L⬅︎R, such as ד. For each insertion operation use the initial mixed bidi string. There are two mixed strings above and so there are a total of 8 insertion operations. The challenge is to predict where in the strings the inserted character will appear before you actually insert the character. Give it a go! Good luck😀

If I did this exercise before I ever studied bidi, I would probably have scored 4/8. Now I understand how the computer is processing this bidi text and so I usually score full marks for such exercises. It is though not an intuitive process for me as I have spent most of my life reading and writing L➡︎R scripts only. I have to think very carefully as to how the computer does it in order to determine the correct answers.

The main purpose of this exercise is to think about the ordering of the characters in the strings. There are two orderings to consider: memory order and display order. Memory order is how it is logically saved in memory which in this case is the order in which I typed it. The memory order of the string I have used above is "abcגבאdef". Display order is how it is presented to the viewer. You have already seen, above, the two possible display orders for the single string "abcגבאdef".

I have used TextEdit for this exercise. In order to set paragraph text direction in TextEdit follow the path: "TextEdit➜ Format➜ Text➜ Writing Direction". Now set paragraph text direction to Right to Left. TextEdit correctly handles bidi text but that is not the case for all word processors or text editors.

There are several permutations of this exercise, including:

  1. What happens at the boundaries with forward delete and back delete?
  2. What happens if the initial memory order character(s) are L⬅︎R instead of L➡︎R?
  3. Use Arabic instead of Hebrew as this introduces the additional challenge of letters changing shape according to preceding and following characters.

This article is aimed at L➡︎R reading/writing people. If you are a L⬅︎R person then you will need to invert some of my instructions. Actually, if you are a L⬅︎R person you will be totally familiar with mixing bidi text and so will fully understand this exercise.

Environment: OSX v10.12 (Sierra), TextEdit v1.12

Wednesday, 21 September 2016

Computer Science Curriculum Internationalization

I have been a long time practitioner and advocate of internationalising Computer Science teaching. My fundamental aim is to give students global computing skills. One such global skill, for example, is the processing of Unicode text rather than the very restricted ASCII text. Once one encompasses Unicode then one is encompassing most languages and scripts of the world.

Over the years I have tried to find other like minded Computer Science educators but have had no success. I had more or less concluded I am a solitary voice when it comes to Computer Science internationalisation. There does though appear to be some light as I recently discovered two organisations that promote internationalisation of teaching curricula.

 The Centre for Curriculum Internationalisation (CCI) which is based at Oxford Brookes University, UK. brookes.ac.uk/services/cci/index.html In addition to their website they have a google discussion group. I posted some information on my Computer Science Internationalisation initiatives and practices to this google forum. Please see groups.google.com/forum/#!topic/cicin/6XJCrqcdLD4

Internationalisation of the Curriculum (IoC) in action which is based in Australia. ioc.global

Update 19th March 2017: I reached out to people and groups and I conclude I am still a solitary voice with respect to Computer Science Curricula Internationalization in UK Universities. I do believe UK Universities will have to embrace Computer Science Internationalization but I think it will be at least ten years before that happens. So, why do I persist? Am I wrong? Well, if I am wrong then so are, Google, Wikipedia, Facebook, Nivea, Booking.com, Nestlé, Hotels.com, Pampers, Intel, Microsoft, Philips, Adobe, Twitter and many many more companies. They all operate globally and are all producing software for the world. These global companies need graduates who have the skills and attitude necessary for building global software.
Note: I have taken these company names from The top 25 global websites from the 2017 Web Globalization Report Card globalbydesign.com/2017/02/16/the-top-25-global-websites-from-the-2017-web-globalization-report-card/

Update 1st October 2017:  I recently created an open forum specifically for discussion on the topic of Computer Science/ICT/IT curricula internationalisation. If this topic interests you, please become a member and join in the discussions. It is open to all. Please see groups.google.com/forum/m/#!forum/computer-science-curriculum-internationalization

Thursday, 25 August 2016

Internationalizing Regular Expressions

The purpose of this post is to encourage all of you who are teaching Regular Expressions (RegExp) or are learning RegExp to think international. Think beyond ASCII. Thinking international means thinking Unicode instead of ASCII. Once one thinks Unicode then one is encompassing the world.

My RegExp teaching slides use ASCII only as a starting point. They then progress to Unicode. I give one of my slides as an example.


There is a lot of information packed into this one slide which needs some explanation. My example slide is using Unicode Chinese characters and Unicode Emoji characters.
  • 人 is a Unicode Chinese character meaning person
  • 鸭 is a Unicode Chinese character meaning duck
  • 鸡 is a Unicode Chinese character meaning chicken
This slide also contains a cultural reference. Some time ago I came across a Weibo 微博 post about the visit to Hong Kong by the big floating yellow duck http://edition.cnn.com/2013/05/02/travel/hong-kong-giant-duck/ The Weibo post had a photo containing many people looking at the duck. The text of the Weibo post was:- 

人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人鸭人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人

 When I saw this I thought it so funny and very clever. It just would not work in English but works so perfectly in Chinese. When writing my RegExp slides I remembered this Weibo post and thought this would make for an excellent cultural connection. Thus my slide is internationalized by using Unicode and incorporating a cultural reference. The use of Unicode is essential for internationalisation. Incorporating a cultural reference is optional but it does add an extra dimension that may well serve to make RegExp slides more interesting and encourage readers to explore the boundless potential of internationalized Regular Expressions.

 Note: I have tried to find the Weibo post but have been unsuccessful so I cannot, unfortunately, provide a reference.

Sunday, 13 March 2016

Arabic Email Addresses

Most human language scripts are written from Left to Right (L➡︎R). Arabic is written Right to Left (L⬅︎R). An email address written in the Latin script would be displayed L➡︎R — username@domain-name. An Arabic email address, on the other hand, would normally and without intervention be displayed L⬅︎R as domain-name@username.

Letʼs take a fictitious Arabic email address — خالد@الدوحة.قطر
  • خالد is the username Khalid
  • الدوحة is the 2nd level domain name Doha
  • قطر is the Top Level Domain (TLD) Qatar. This part is not fictitious as قطر is a valid ccTLD.
Your browser should be displaying the email address خالد@الدوحة.قطر in L⬅︎R order which is not an order familiar to most L➡︎R readers and so requires some effort to parse.

When text has mixed L➡︎R and L⬅︎R characters it is referred to as Bidirectional (bidi) text. There is a complex Unicode algorithm specifically to determine  display order of bidi text unicode.org/reports/tr9/ If you read this report you will see something called Directional Isolates.

In the html world there are tags and attributes specific to bidi. One such tag is <bdi> which is bidi isolate. Using such html bidi isolation one can incorporate Arabic email addresses that are natural to read for both L➡︎R and L⬅︎R readers. These addresses can be written such that their overall text direction adheres to the text direction of the context. This context may be the direction of the whole html document or some subpart such as a paragraph.

First we will setup our html with a L➡︎R context for L➡︎R readers. The below paragraph (p) is setup with dir (direction) to ltr (left to right). The email address has 3 components: username, 2nd level domain name and TLD. Each component is direction isolated. This gives an email address whose overall direction is L➡︎R. The text of each component is, as it should be, L⬅︎R. I posit that this is much easier for a L➡︎R reader to comprehend. It is now obvious, for instance, to determine which is the username and which is the TLD.

The html code
<p dir="ltr"><bdi>خالد</bdi>@<bdi>الدوحة</bdi>.<bdi>قطر</bdi></p>
displays the address as
خالد@الدوحة.قطر

 
But how will the address be displayed if the context is changed to rtl (right to left). The code correctly displays the whole address in L⬅︎R order, both overall direction and text direction of each component. Thus we have also catered for L⬅︎R readers without changing relevant address display html code.

The html code
<p dir="rtl"><bdi>خالد</bdi>@<bdi>الدوحة</bdi>.<bdi>قطر</bdi></p>
displays the address as
خالد@الدوحة.قطر

Just in case your browser cannot, as yet, handle bidi isolates here are the 2 contexts in image format.


Friday, 1 January 2016

Emoji by Name

Here is a method for typing Emoji by name but not by English name. This method is for writing Emoji by Chinese name. OSX provides a Pinyin Input Method for writing Chinese. Pinyin is a romanization of Chinese. When writing in pinyin a candidate window pops up which lists all possible Chinese characters 汉字 and Emoji.

Candidate Window - Frequency

Candidate Window — Emoji

Here is a small sample of the Emoji which can be typed using this Pinyin Input Method. Each line below starts with the pinyin followed by the Emoji. The pinyin can have multiple meanings, multiple candidate Chinese characters and hence multiple Emoji. Hopefully for the examples I have given below you will be able to work out the meanings from the Emoji. Some of the below pinyin represent objects and some represent emotions.

  1. ai — ❤️ 😘 💗 💓 😍
  2. bei shang — 😢 😭
  3. che — 🚗 🚘
  4. hou — 🐒 🐵
  5. hua — 🌹 🌼 💐 🌷 🌸 🌺
  6. ka fei — ☕️
  7. kai xin — 😄 😺 😃 😆 ☺️
  8. mao — 🐱 🐈 ⚓️
  9. niu — 🐂 🐃 🐄 🐮
  10. pi jiu — 🍺 🍻
  11. sheng qi — 😠 😡 💢 😾
  12. shu — 🌲 🌳 🌴 🐭
  13. shui guo — 🍉 🍊 🍇 🍈 🍌 🍍 🍎 🍑 🍒 🍓 🍅 🍆 🍋 🍏 🍐
  14. tuo la ji — 🚜
  15. xiang — 🐘
  16. xiao — 😊 😄
  17. xie — 👟 👠
  18. xue ren — ⛄️ ☃️
  19. yin yue — 🎵 🎷 🎶 🎸 🎹 🎺 🎻 🎼 🎤 🎧 📯
  20. yu — 🐟 🐠

Environment: OSX El Capitan v10.11.2