Difference between revisions of "KeepIf Command"
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{{command|logical}} | {{command|logical}} | ||
| − | ; KeepIf[Condition, List]: Creates a new list that only contains those elements of the initial list that | + | ; KeepIf[Condition, List]: Creates a new list that only contains those elements of the initial list that fulfil the condition. |
: {{Example|1=<code>KeepIf[x<3, {1, 2, 3, 4, 1, 5, 6}]</code> returns the new list ''{1, 2, 1}''.}} | : {{Example|1=<code>KeepIf[x<3, {1, 2, 3, 4, 1, 5, 6}]</code> returns the new list ''{1, 2, 1}''.}} | ||
| + | {{note|For list of numbers arbitrary condition may be used. For list of other objects one can use only conditions of the form <code>x==constant</code> or <code>x!=constant</code>.}} | ||
Revision as of 21:44, 26 September 2011
- KeepIf[Condition, List]
- Creates a new list that only contains those elements of the initial list that fulfil the condition.
- Example:
KeepIf[x<3, {1, 2, 3, 4, 1, 5, 6}]returns the new list {1, 2, 1}.
Note: For list of numbers arbitrary condition may be used. For list of other objects one can use only conditions of the form
x==constant or x!=constant.
