Difference between revisions of "First Command"

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(added v4 - needs descriptions)
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<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
 
<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
 
{{command|list}}
 
{{command|list}}
; First[List]: Returns the first element of the list.
+
; First[List L]: Returns a list containing the first element of the list ''L''.
; First[List, Number n of elements]: Returns a new list that contains just the first ''n'' elements of the list.
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{{example|1=<code>First[{1,2,3}]</code> returns {1}.}}
; First[Text]: {{Description}}
+
To get the first element itself use e.g. [[Element Command]].
; First[Text, Number n of elements]: {{Description}}
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; First[List L, Number n of elements]: Returns a new list that contains just the first ''n'' elements of the list ''L''.
 +
; First[Text]:Returns first character of the text.
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; First[Text, Number n of elements]: Returns the first ''n'' characters of the text.
 +
{{Example|1=<code>First["Hello",2]</code> returns "He".}}
 
; First[Locus, Number n of elements]: {{Description}}
 
; First[Locus, Number n of elements]: {{Description}}

Revision as of 13:54, 23 March 2011


First[List L]
Returns a list containing the first element of the list L.
Example: First[{1,2,3}] returns {1}.

To get the first element itself use e.g. Element Command.

First[List L, Number n of elements]
Returns a new list that contains just the first n elements of the list L.
First[Text]
Returns first character of the text.
First[Text, Number n of elements]
Returns the first n characters of the text.
Example: First["Hello",2] returns "He".
First[Locus, Number n of elements]


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