Difference between revisions of "Template:LSL Function/negative index/range"

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See {{LSLGC|Negative_Index#Range Functions|negative indexes}} for more information.
See {{LSLGC|Negative_Index#Range Functions|negative indexes}} for more information.
}}{{#vardefine:p_{{{1|none}}}_desc|{{{1|start}}} index
}}{{#vardefine:p_{{{1|none}}}_desc|{{{1|start}}} index
}}{{#vardefine:p_{{{2|none}}}_desc|{{{1|end}}} index
}}{{#vardefine:p_{{{2|none}}}_desc|{{{2|end}}} index
}}<noinclude>{{#var:spec}}</noinclude>
}}<noinclude>{{#var:spec}}</noinclude>

Revision as of 17:49, 6 March 2007

Index Positive Negative
First 0 -length
Last length - 1 -1

Mentally first translate any negative indexes into positive indexes

  • If {{{1}}} <= {{{2}}} then the range operated on starts at {{{1}}} and ends at {{{2}}}. [{{{1}}}, {{{2}}}]
  • If {{{1}}} > {{{2}}} then the range operated on starts at 0 and goes to {{{2}}} and then starts again at {{{1}}} and goes to -1. [0, {{{2}}}] + [{{{1}}}, -1]

Positive indexes past the length (after the last index), or negative indexes past the beginning (before the first index) are valid. The effects are predictable, the entries are treated as if they were there but were removed just before output.

See negative indexes for more information.

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