System Function CS - Revision history

Sudleyplace at 22:58, 12 December 2017

2017-12-12T22:58:35Z

← Older revision		Revision as of 18:58, 12 December 2017
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	\|<apll>Z←⎕CS</apll>		\|<apll>Z←⎕CS</apll>
	\|returns a well-known Collating Sequence for grading character arrays, extended to account for accented Latin alphabets.}}		\|returns a well-known Collating Sequence for grading character arrays, extended to account for accented Latin alphabets.}}
	{{BoxEnd\|<apll>Z</apll> is a four-dimensional character array of shape <apll>10 6 2 28 </apll> with <apll>~~3360~~ ≡ ×/10 6 2 28</apll> characters.}}		{{BoxEnd\|<apll>Z</apll> is a four-dimensional character array of shape <apll>10 6 2 27 </apll> with <apll>3240 ≡ ×/10 6 2 27</apll> characters.}}

	The values as arranged as follows:		The values as arranged as follows:
	* The length <apll>28</apll> coordinate contains one space followed by a 26-letter Latin alphabet ~~and another space~~.		* The length <apll>27</apll> coordinate contains one space followed by a 26-letter Latin alphabet.
	* The length <apll>2</apll> coordinate distinguishes between the lowercase from the uppercase of the Latin alphabet.		* The length <apll>2</apll> coordinate distinguishes between the lowercase from the uppercase of the Latin alphabet.
	* The length <apll>6</apll> coordinate distinguishes between the [[System_Function_A\|one unaccented and five accented Latin alphabets]].		* The length <apll>6</apll> coordinate distinguishes between the [[System_Function_A\|one unaccented and five accented Latin alphabets]].
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	* All other values not specified above are blank.		* All other values not specified above are blank.

	While this collating sequence is very useful, it is not the end of the question. It needs to be modified for special circumstances, for example if you are grading numbers with a decimal point. Think of it as a starting point for more special purpose needs.		While this collating sequence is very useful, it is not the end of the question. It needs to be modified for special circumstances, for example, if you are grading numbers with a decimal point. Think of it as a starting point for more special purpose needs.

	To give you a flavor of this sequence, here's the first hyperplane of <apll>⎕CS</apll>, where a Blank Symbol (<apll>␢</apll>) is used in place of a space to serve as a visible reminder of its presence:		To give you a flavor of this sequence, here's the first hyperplane of <apll>⎕CS</apll>, where a Blank Symbol (<apll>␢</apll>) is used in place of a space to serve as a visible reminder of its presence:

	<apll>      ⎕CS[1;;;]<br/>		<apll>      ⎕CS[1;;;]<br/>
	~~␢abcdefghijklmnopqrstuvwxyz0~~<br/>		␢abcdefghijklmnopqrstuvwxyz<br/>
	~~␢ABCDEFGHIJKLMNOPQRSTUVWXYZ␢~~<br/>		0ABCDEFGHIJKLMNOPQRSTUVWXYZ<br/>
	<br/>		<br/>
	~~␢ábćdéfǵhíjḱĺḿńóṕqŕśtúvẃxýź␢~~<br/>		␢ábćdéfǵhíjḱĺḿńóṕqŕśtúvẃxýź<br/>
	~~␢ÁBĆDÉFǴHÍJḰĹḾŃÓṔQŔŚTÚVẂXÝŹ␢~~<br/>		␢ÁBĆDÉFǴHÍJḰĹḾŃÓṔQŔŚTÚVẂXÝŹ<br/>
	<br/>		<br/>
	~~␢àbcdèfghìjklmǹòpqrstùvẁxỳz␢~~<br/>		␢àbcdèfghìjklmǹòpqrstùvẁxỳz<br/>
	~~␢ÀBCDÈFGHÌJKLMǸÒPQRSTÙVẀXỲZ␢~~<br/>		␢ÀBCDÈFGHÌJKLMǸÒPQRSTÙVẀXỲZ<br/>
	<br/>		<br/>
	~~␢âbĉdêfĝĥîĵklmnôpqrstuvwxyz␢~~<br/>		␢âbĉdêfĝĥîĵklmnôpqrstuvwxyz<br/>
	~~␢ÂBĈDÊFĜĤÎĴKLMNÔPQRŜTÛVŴXŶẐ␢~~<br/>		␢ÂBĈDÊFĜĤÎĴKLMNÔPQRŜTÛVŴXŶẐ<br/>
	<br/>		<br/>
	~~␢äbcdëfgḧïjklmnöpqrsẗüvẅẍÿz␢~~<br/>		␢äbcdëfgḧïjklmnöpqrsẗüvẅẍÿz<br/>
	~~␢ÄBCDËFGḦÏJKLMNÖPQRSTÜVẄẌŸZ␢~~<br/>		␢ÄBCDËFGḦÏJKLMNÖPQRSTÜVẄẌŸZ<br/>
	<br/>		<br/>
	~~␢ãbcdẽfghĩjklmñõpqrstũṽwxỹz␢~~<br/>		␢ãbcdẽfghĩjklmñõpqrstũṽwxỹz<br/>
	~~␢ÃBCDẼFGHĨJKLMÑÕPQRSTŨṼWXỸZ␢~~<br/>		␢ÃBCDẼFGHĨJKLMÑÕPQRSTŨṼWXỸZ<br/>
	</apll>		</apll>

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	<apll>    ∇ Z←⎕CS;⎕IO<br/>		<apll>    ∇ Z←⎕CS;⎕IO<br/>
	[1]   ⎕IO←1<br/>		[1]   ⎕IO←1<br/>
	[2]   Z←10 6 2 ~~28⍴~~' '<br/>		[2]   Z←10 6 2 27⍴' '<br/>
	[3]   Z[1;1;;1+⍳26]←⎕a,[0.5] ⎕A<br/>		[3]   Z[1;1;;1+⍳26]←⎕a,[0.5] ⎕A<br/>
	[4]   Z[1;2;;1+⍳26]←⎕á,[0.5] ⎕Á<br/>		[4]   Z[1;2;;1+⍳26]←⎕á,[0.5] ⎕Á<br/>
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	[7]   Z[1;5;;1+⍳26]←⎕ä,[0.5] ⎕Ä<br/>		[7]   Z[1;5;;1+⍳26]←⎕ä,[0.5] ⎕Ä<br/>
	[8]   Z[1;6;;1+⍳26]←⎕ã,[0.5] ⎕Ã<br/>		[8]   Z[1;6;;1+⍳26]←⎕ã,[0.5] ⎕Ã<br/>
	[9]   Z[;1;1~~;28~~]←⎕D<br/>		[9]   Z[;1;2;1]←⎕D<br/>
	∇</apll>		∇</apll>

WikiSysop at 22:51, 28 March 2017

2017-03-28T22:51:38Z

← Older revision		Revision as of 18:51, 28 March 2017
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	* The length <apll>28</apll> coordinate contains one space followed by a 26-letter Latin alphabet and another space.		* The length <apll>28</apll> coordinate contains one space followed by a 26-letter Latin alphabet and another space.
	* The length <apll>2</apll> coordinate distinguishes between the lowercase from the uppercase of the Latin alphabet.		* The length <apll>2</apll> coordinate distinguishes between the lowercase from the uppercase of the Latin alphabet.
	* The length <apll>6</apll> coordinate distinguishes between the one unaccented and five accented Latin alphabets.		* The length <apll>6</apll> coordinate distinguishes between the [[System_Function_A\|one unaccented and five accented Latin alphabets]].
	* The length <apll>10</apll> coordinate distinguishes between the ten digits.		* The length <apll>10</apll> coordinate distinguishes between the ten digits.
	* All other values not specified above are blank.		* All other values not specified above are blank.

WikiSysop: Created page with "

{quad}CS - Collating Sequence

{quad}CS is niladic system function which returns a well-known collating sequence appropriate to grading charact..."

2017-03-01T07:48:03Z

Created page with "<h1><apl>{quad}CS</apl> - Collating Sequence</h1> <apll>{quad}CS</apll> is niladic system function which returns a well-known collating sequence appropriate to grading charact..."

New page

<h1><apl>{quad}CS</apl> - Collating Sequence</h1>
<apll>{quad}CS</apll> is niladic system function which returns a well-known collating sequence appropriate to grading character arrays via the Dyadic Grade function.
{{BoxStart
|<apll>Z←⎕CS</apll>
|returns a well-known Collating Sequence for grading character arrays, extended to account for accented Latin alphabets.}}
{{BoxEnd|<apll>Z</apll> is a four-dimensional character array of shape <apll>10 6 2 28 </apll> with <apll>3360 ≡ ×/10 6 2 28</apll> characters.}}

The values as arranged as follows:
* The length <apll>28</apll> coordinate contains one space followed by a 26-letter Latin alphabet and another space.
* The length <apll>2</apll> coordinate distinguishes between the lowercase from the uppercase of the Latin alphabet.
* The length <apll>6</apll> coordinate distinguishes between the one unaccented and five accented Latin alphabets.
* The length <apll>10</apll> coordinate distinguishes between the ten digits.
* All other values not specified above are blank.

While this collating sequence is very useful, it is not the end of the question. It needs to be modified for special circumstances, for example if you are grading numbers with a decimal point. Think of it as a starting point for more special purpose needs.

To give you a flavor of this sequence, here's the first hyperplane of <apll>⎕CS</apll>, where a Blank Symbol (<apll>␢</apll>) is used in place of a space to serve as a visible reminder of its presence:

<apll>      ⎕CS[1;;;] 
␢abcdefghijklmnopqrstuvwxyz0 
␢ABCDEFGHIJKLMNOPQRSTUVWXYZ␢ 
 
␢ábćdéfǵhíjḱĺḿńóṕqŕśtúvẃxýź␢ 
␢ÁBĆDÉFǴHÍJḰĹḾŃÓṔQŔŚTÚVẂXÝŹ␢ 
 
␢àbcdèfghìjklmǹòpqrstùvẁxỳz␢ 
␢ÀBCDÈFGHÌJKLMǸÒPQRSTÙVẀXỲZ␢ 
 
␢âbĉdêfĝĥîĵklmnôpqrstuvwxyz␢ 
␢ÂBĈDÊFĜĤÎĴKLMNÔPQRŜTÛVŴXŶẐ␢ 
 
␢äbcdëfgḧïjklmnöpqrsẗüvẅẍÿz␢ 
␢ÄBCDËFGḦÏJKLMNÖPQRSTÜVẄẌŸZ␢ 
 
␢ãbcdẽfghĩjklmñõpqrstũṽwxỹz␢ 
␢ÃBCDẼFGHĨJKLMÑÕPQRSTŨṼWXỸZ␢ 
</apll>

The following APL pseudo-function describes how <apll>⎕CS</apll> could be created:

<apll>    ∇ Z←⎕CS;⎕IO 
[1]   ⎕IO←1 
[2]   Z←10 6 2 28⍴' ' 
[3]   Z[1;1;;1+⍳26]←⎕a,[0.5] ⎕A 
[4]   Z[1;2;;1+⍳26]←⎕á,[0.5] ⎕Á 
[5]   Z[1;3;;1+⍳26]←⎕à,[0.5] ⎕À 
[6]   Z[1;4;;1+⍳26]←⎕â,[0.5] ⎕Â 
[7]   Z[1;5;;1+⍳26]←⎕ä,[0.5] ⎕Ä 
[8]   Z[1;6;;1+⍳26]←⎕ã,[0.5] ⎕Ã 
[9]   Z[;1;1;28]←⎕D 
    ∇</apll>

'''See also: [[Unicode|Unicode page]] and [[System_Function_A|⎕A and friends]]'''.

{{SFN|CS}}