Unicode - Revision history

Robert Wallick: link to ⎕AV page

2015-01-24T02:15:38Z

link to ⎕AV page

← Older revision		Revision as of 22:15, 23 January 2015
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	One other set of characters, the underbarred alphabet (<apll>{A_}</apll> through <apll>{Z_}</apll>), may be pasted into a session or function editor window. There is no way to enter these characters directly from the keyboard. Depending on a User Option setting, when these characters are pasted into a session or function editor window, they are treated as themselves or are mapped to the lowercase alphabet. When used in a name, they are always equivalent to the corresponding lowercase letter, although they display as themselves. Because of this latter translation, they may be used as either a leading or subsequent character in a name. Thus the names <apll>{A_}l{P_}h{A_}</apll> and <apll>alpha</apll> display differently, but they both refer to the same object; a value assigned to one is reflected in the other.		One other set of characters, the underbarred alphabet (<apll>{A_}</apll> through <apll>{Z_}</apll>), may be pasted into a session or function editor window. There is no way to enter these characters directly from the keyboard. Depending on a User Option setting, when these characters are pasted into a session or function editor window, they are treated as themselves or are mapped to the lowercase alphabet. When used in a name, they are always equivalent to the corresponding lowercase letter, although they display as themselves. Because of this latter translation, they may be used as either a leading or subsequent character in a name. Thus the names <apll>{A_}l{P_}h{A_}</apll> and <apll>alpha</apll> display differently, but they both refer to the same object; a value assigned to one is reflected in the other.

			'''See also:''' Quad AV = niladic system function '''⎕AV''' - '''[[System_Function_AV\|Atomic Vector]]''' page.

WikiSysop at 02:36, 3 February 2010

2010-02-03T02:36:38Z

← Older revision		Revision as of 22:36, 2 February 2010
Line 2:		Line 2:
	All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a subset of a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.		All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a subset of a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.

	UCS-2 represents characters ~~from~~ U+0000 through U+FFFF; UTF-16 represents characters ~~from~~ U+0000 through U+10FFFF ~~—~~ both encodings exclude ~~the surrogate pair range of~~ U+D800 through U+DFFF (2,048 characters).		UCS-2 represents characters in the range U+0000 through U+FFFF; UTF-16 represents characters in the range U+0000 through U+10FFFF. However, because of the way UTF-16 represents characters above U+FFFF, the range of code points for both encodings exclude U+D800 through U+DFFF (2,048 characters).

	Thus, UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters~~. UTF-16 is needed mostly for Far Eastern languages~~.		Thus, UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters.

	==Alphabet for Names==		==Alphabet for Names==

Sudleyplace: /* Alphabet for Names */

2008-10-19T01:08:27Z

Alphabet for Names

← Older revision		Revision as of 21:08, 18 October 2008
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	The alphabet used for names consists of an initial character followed by one or more subsequent characters.		The alphabet used for names consists of an initial character followed by one or more subsequent characters.

	* ~~A leading~~ character is one of <apll>a</apll> though <apll>z</apll>, <apll>A</apll> through <apll>Z</apll>, delta (<apll>∆</apll>), or delta underbar (<apll>⍙</apll>).		* An initial character is one of <apll>a</apll> though <apll>z</apll>, <apll>A</apll> through <apll>Z</apll>, delta (<apll>∆</apll>), or delta underbar (<apll>⍙</apll>).
	* A subsequent character is a leading character, <apll>0</apll> through <apll>9</apll>, overbar (<apll>{overbar}</apll>), or underbar (<apll>_</apll>).		* A subsequent character is a leading character, <apll>0</apll> through <apll>9</apll>, overbar (<apll>{overbar}</apll>), or underbar (<apll>_</apll>).

	One other set of characters, the underbarred alphabet (<apll>{A_}</apll> through <apll>{Z_}</apll>), may be pasted into a session or function editor window. There is no way to enter these characters directly from the keyboard. Depending on a User Option setting, when these characters are pasted into a session or function editor window, they are treated as themselves or are mapped to the lowercase alphabet. When used in a name, they are always equivalent to the corresponding lowercase letter, although they display as themselves. Because of this latter translation, they may be used as either a leading or subsequent character in a name. Thus the names <apll>{A_}l{P_}h{A_}</apll> and <apll>alpha</apll> display differently, but they both refer to the same object; a value assigned to one is reflected in the other.		One other set of characters, the underbarred alphabet (<apll>{A_}</apll> through <apll>{Z_}</apll>), may be pasted into a session or function editor window. There is no way to enter these characters directly from the keyboard. Depending on a User Option setting, when these characters are pasted into a session or function editor window, they are treated as themselves or are mapped to the lowercase alphabet. When used in a name, they are always equivalent to the corresponding lowercase letter, although they display as themselves. Because of this latter translation, they may be used as either a leading or subsequent character in a name. Thus the names <apll>{A_}l{P_}h{A_}</apll> and <apll>alpha</apll> display differently, but they both refer to the same object; a value assigned to one is reflected in the other.

Sudleyplace: /* Character Array and Name Storage */

2008-07-16T16:06:22Z

Character Array and Name Storage

← Older revision		Revision as of 12:06, 16 July 2008
Line 2:		Line 2:
	All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a subset of a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.		All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a subset of a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.

	UCS-2 represents characters from U+0000 through U+FFFF; UTF-16 represents characters from U+0000 through U+10FFFF — both encodings exclude the surrogate pair range of U+D800 through U+DFFF.		UCS-2 represents characters from U+0000 through U+FFFF; UTF-16 represents characters from U+0000 through U+10FFFF — both encodings exclude the surrogate pair range of U+D800 through U+DFFF (2,048 characters).

	Thus, UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters. UTF-16 is needed mostly for Far Eastern languages.		Thus, UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters. UTF-16 is needed mostly for Far Eastern languages.

WikiSysop at 00:04, 18 June 2008

2008-06-18T00:04:57Z

← Older revision		Revision as of 20:04, 17 June 2008
Line 1:		Line 1:
	All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a ~~precursor to~~ a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.		==Character Array and Name Storage==
			All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a subset of a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.

	UCS-2 ~~can represent~~ characters from U+0000 through U+FFFF; UTF-16 ~~can represent~~ characters from U+0000 through U+10FFFF — both encodings exclude the surrogate pair range of U+D800 through U+DFFF.		UCS-2 represents characters from U+0000 through U+FFFF; UTF-16 represents characters from U+0000 through U+10FFFF — both encodings exclude the surrogate pair range of U+D800 through U+DFFF.

	Thus UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters. UTF-16 is needed mostly for Far Eastern languages.		Thus, UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters. UTF-16 is needed mostly for Far Eastern languages.

			==Alphabet for Names==
			The alphabet used for names consists of an initial character followed by one or more subsequent characters.

			* A leading character is one of <apll>a</apll> though <apll>z</apll>, <apll>A</apll> through <apll>Z</apll>, delta (<apll>∆</apll>), or delta underbar (<apll>⍙</apll>).
			* A subsequent character is a leading character, <apll>0</apll> through <apll>9</apll>, overbar (<apll>{overbar}</apll>), or underbar (<apll>_</apll>).

			One other set of characters, the underbarred alphabet (<apll>{A_}</apll> through <apll>{Z_}</apll>), may be pasted into a session or function editor window. There is no way to enter these characters directly from the keyboard. Depending on a User Option setting, when these characters are pasted into a session or function editor window, they are treated as themselves or are mapped to the lowercase alphabet. When used in a name, they are always equivalent to the corresponding lowercase letter, although they display as themselves. Because of this latter translation, they may be used as either a leading or subsequent character in a name. Thus the names <apll>{A_}l{P_}h{A_}</apll> and <apll>alpha</apll> display differently, but they both refer to the same object; a value assigned to one is reflected in the other.

WikiSysop: New page: All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a precursor to a more gene...

2008-06-17T23:17:11Z

New page: All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a precursor to a more gene...

New page

All character arrays and names (variable, function, and operator) are stored as one 16-bit word per character. This fixed length encoding is called UCS-2 and is a precursor to a more general encoding called [http://en.wikipedia.org/wiki/UTF-16 UTF-16]. The latter is a variable length encoding using one or two 16-bit words per character.

UCS-2 can represent characters from U+0000 through U+FFFF; UTF-16 can represent characters from U+0000 through U+10FFFF — both encodings exclude the surrogate pair range of U+D800 through U+DFFF.

Thus UCS-2 encodes 63,488 (=65,536 - 2,048) different characters, and UTF-16 encodes 1,112,064 (=1,114,112 - 2,048) different characters. UTF-16 is needed mostly for Far Eastern languages.