Core Function StrCSpn
StrCSpn( <subject>, <mask>, <start>, <length> )
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Description
Find length of initial segment not matching mask.
Parameters
subject
The string to examine.
mask
The list of characters to ignore (as a string).
start
The position in subject to start searching.
If start is given and is non-negative, then strcspn() will begin examining subject at the start'th position.
For instance, in the string 'abcdef', the character at position 0 is 'a', the character at position 2 is 'c', and so forth.
If start is given and is negative, then strcspn() will begin examining subject at the start'th position from the end of subject.
length
The length of the segment from subject to examine.
If length is given and is non-negative, then subject will be examined for length characters after the starting position.
If lengthis given and is negative, then subject will be examined from the starting position up to length characters from the end of subject.
Return Value
Returns the length of the segment as an integer.
Remarks
None.
Example
say strcspn('abcd', 'apple'); // 0 say strcspn('abcd', 'banana'); // 0 say strcspn('hello', 'l'); // 2 say strcspn('hello', 'world'); // 2
