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doIteration command |
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Usage | |
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Description | |
Executes <command> once then evaluates the <condition>.
If <condition> evaluates to true (non zero result) then repeats the execution again. <command> may be either a single command or a block of commands. It can contain the break command: in that case the execution of the <command> will be immediately interrupted and the control transferred to the command following this while block. It is valid for <command> to be an empty command terminated with a ';'. <condition> is an expression as the ones evaluated by [doc:expressioneval]$(*)[/doc] with the following extensions: If <condition> is a string, its length is evaluated: in this way a non-empty string causes the <condition> to be true, an empty string causes it to be false. If <condition> is an array, its size is evaluated: in this way a non-empty array causes the <condition> to be true, an empty array causes it to be false. If <condition> is a hash, the number of its entries is evaluated: in this way a non-empty hash causes the <condition> to be true, an empty hash causes it to be false. |
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Syntax Specification | |
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Examples | |
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See also | |
while |