Difference between revisions of "$len"
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| − | Returns the length of a | + | Returns the length of a string, i.e. how many characters are within it. |
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$len(text) | $len(text) | ||
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$len() is a simple, but powerful tool for processing strings. | $len() is a simple, but powerful tool for processing strings. | ||
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== Examples == | == Examples == | ||
| − | + | $len(test string) returns 11. | |
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| + | The following example turns uppercase letters to lowercase and vice-versa. | ||
<br/>$len is used to get the length of the string (the value given to the alias) and loop through its every character. | <br/>$len is used to get the length of the string (the value given to the alias) and loop through its every character. | ||
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[[echo]] -a $changecase(Hello) | [[echo]] -a $changecase(Hello) | ||
; returns hELLO | ; returns hELLO | ||
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| + | == See Also == | ||
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| + | * [[$mid]] - returns parts of a string | ||
| + | * [[$str]] - repeats a string | ||
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[[Category:Text_and_Number_Identifiers]] | [[Category:Text_and_Number_Identifiers]] | ||
Latest revision as of 19:00, 25 April 2008
Returns the length of a string, i.e. how many characters are within it.
$len(text)
$len() is a simple, but powerful tool for processing strings.
Examples
$len(test string) returns 11.
The following example turns uppercase letters to lowercase and vice-versa.
$len is used to get the length of the string (the value given to the alias) and loop through its every character.
alias changecase { var %i = 1, %str, %c while (%i <= $len($$1-)) { %c = $mid($1-, %i, 1) if ($isupper(%c)) { %str = %str $+ $lower(%c) } else { %str = %str $+ $upper(%c) } inc %i } return %str } echo -a $changecase(Hello) ; returns hELLO
