Unicode strings: Difference between revisions
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Demonstrate how one is expected to handle Unicode strings. Some example considerations: can a Unicode string be directly written in the source code? How does one do IO with unicode strings? Can these strings be manipulated easily? Can non-ASCII characters be used for keywords/identifiers/etc? What encodings (UTF-8, UTF-16, etc) can your language accept without much trouble? |
Demonstrate how one is expected to handle Unicode strings. Some example considerations: can a Unicode string be directly written in the source code? How does one do IO with unicode strings? Can these strings be manipulated easily? Can non-ASCII characters be used for keywords/identifiers/etc? What encodings (UTF-8, UTF-16, etc) can your language accept without much trouble? |
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=={{header|J}}== |
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Unicode characters can be represented directly in J strings: |
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<lang j> '♥♦♣♠' |
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♥♦♣♠</lang> |
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By default, they are represented as utf-8: |
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<lang j> #'♥♦♣♠' |
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12</lang> |
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However, they can be represented as utf-16 instead: |
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<lang j> 7 u:'♥♦♣♠' |
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♥♦♣♠ |
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#7 u:'♥♦♣♠' |
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4</lang> |
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These forms are not treated as equivalent: |
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<lang> '♥♦♣♠' -: 7 u:'♥♦♣♠' |
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0</lang> |
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I/O uses characters in whatever format they happen to be in. |
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See also: http://www.jsoftware.com/help/dictionary/duco.htm |
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Unicode characters are not legal tokens or names, within current versions J. |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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In Perl, "Unicode" means "UTF-8". If you want to include utf8 characters in your source file, unless you have set <code>PERL_UNICODE</code> environment correctly, you should do<lang Perl>use utf8;</lang> or you rick the parser treating the file as raw bytes. |
In Perl, "Unicode" means "UTF-8". If you want to include utf8 characters in your source file, unless you have set <code>PERL_UNICODE</code> environment correctly, you should do<lang Perl>use utf8;</lang> or you rick the parser treating the file as raw bytes. |