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docs: add doc for substr

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Fixes #1156
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bep 2015-05-22 22:36:17 +02:00
parent be4376a022
commit be1366074c
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docs/content/templates/functions.md
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@ -392,6 +392,26 @@ e.g.
* `{{slicestr "BatMan" 3}}` → "Man"
* `{{slicestr "BatMan" 0 3}}` → "Bat"
### substr
Substr extracts parts of a string, beginning at the character at the specified
position, and returns the specified number of characters.
It normally takes two parameters: `start` and `length`.
It can also take one parameter: `start`, i.e. `length` is omitted, in which case
the substring starting from start until the end of the string will be returned.
To extract characters from the end of the string, use a negative start number.
In addition, borrowing from the extended behavior described at http://php.net/substr,
if `length` is given and is negative, then that many characters will be omitted from
the end of string.
e.g.
* `{{substr "BatMan" 0 -3}}` → "Bat"
* `{{substr "BatMan" 3 3}}` → "Man"
### title
Convert all characters in string to titlecase.