少于1分钟
将以下英文翻译为中文:
https://gohugo.io/functions/substr/
Extracts parts of a string from a specified character’s position and returns the specified number of characters.
substr STRING START [LENGTH]
strings.Substr STRING START [LENGTH]
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.
If length
is given and is negative, that number of characters will be omitted from the end of string.
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