Difference between revisions of "First Command"

Revision as of 08:25, 7 August 2019

First( <List> ): Gives a new list that contains the first element of the given list.; Example:
First({1, 4, 3}) yields {1}.

Note: To get the first element use Element({1, 4, 3}, 1).
First( <List>, <Number n of elements> ): Gives a new list that contains just the first n elements of the given list.; Example:
First({1, 4, 3}, 2) yields {1, 4}.

First( <Text> ): Gives first character of the text.; Example:
First("Hello") yields "H".

First( <Text> , <Number n of elements> ): Gives the first n characters of the text.; Example:
First("Hello",2) yields "He".

First( <Locus>, <Number n of elements> )

This command is useful for

loci generated by SolveODE Command - It returns list points that were created in the first n steps of the numeric ODE-solving algorithm.
loci generated using ShortestDistance Command, TravelingSalesman Command, Voronoi Command, MinimumSpanningTree Command and ConvexHull Command Commands - It returns vertices of the graph.

Note:

@@ Line 1: / Line 1: @@
-<noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude>
+<noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|cas=true|list}}
-{{command|list}}
+;First( &lt;List> )
-; First[List L]: Returns a list containing the first element of the list ''L''.
+:Gives a new list that contains the first element of the given list.
-{{example|1=<code>First[{1,2,3}]</code> returns {1}.}}
+:{{example|1=<div><code><nowiki>First({1, 4, 3})</nowiki></code> yields ''{1}''.</div>}}
-To get the first element itself use e.g. [[Element Command]].
+:{{note| 1=To get the first element use <code><nowiki>Element({1, 4, 3}, 1)</nowiki></code>.}}
-; First[List L, Number n of elements]: Returns a new list that contains just the first ''n'' elements of the list ''L''.
+;First( &lt;List>, <Number n of elements> )
-; First[Text]:Returns first character of the text.
+:Gives a new list that contains just the first ''n'' elements of the given list.
-; First[Text, Number n of elements]: Returns the first ''n'' characters of the text.
+:{{example|1=<div><code><nowiki>First({1, 4, 3}, 2)</nowiki></code> yields ''{1, 4}''.</div>}}
-{{Example|1=<code>First["Hello",2]</code> returns "He".}}
+;First( <Text> )
-; First[Locus, Number n of elements]: This command is useful for
+:Gives first character of the text.
-:* loci generated by [[SolveODE Command]] -- It returns list points that were created in the first ''n'' steps of the numeric ODE-solving algorithm.
+:{{example|1=<div><code><nowiki>First("Hello")</nowiki></code> yields ''"H"''.</div>}}
-:* loci generated using [[ShortestPath Command]] and [[TravellingSalesman Command]] -- it returns vertices of the graph; their order determines the path resp. circle in the graph.
+;First( <Text> , <Number n of elements> )
+:Gives the first ''n'' characters of the text.
+:{{example|1=<div><code><nowiki>First("Hello",2)</nowiki></code> yields ''"He"''.</div>}}
+;First( <Locus>, <Number n of elements> )
+:This command is useful for
+:*loci generated by [[SolveODE Command]] - It returns list points that were created in the first ''n'' steps of the numeric ODE-solving algorithm.
+:*loci generated using [[ShortestDistance Command]], [[TravelingSalesman Command]], [[Voronoi Command]], [[MinimumSpanningTree Command]] and [[ConvexHull Command]] Commands - It returns vertices of the graph.
+{{note| 1=<div>See also [[Last Command]].</div>}}

Difference between revisions of "First Command"

Revision as of 08:25, 7 August 2019

First

Command Categories (All commands)