int find(string haystack, string needle)
int find(string haystack, string needle, int start)
int find(string haystack, string needle, int start, int end)
Returns the position of the first occurrence of the needle
string within the haystack
string. You can limit the result to the first substring that starts at or after a start
position, and at or before an end
position.
You can find each occurrence in a loop by setting start
at each iteration to the end of the previous match.
Returns a negative number if the substring is not found.
int [] find(string haystack, string needle)
int [] find(string haystack, string needle, int start)
int [] find(string haystack, string needle, int start, int end)
Returns a list of positions of occurrences of the needle
string within the haystack
string. You can limit the results to substrings that start at or after a start
position, and before an end
position.
Returns an empty array if the substring is not found.
int find(<type>array[], <type>target)
int find(<type>array[], <type>target, int start)
int find(<type>array[], <type>target, int start, int end)
Returns the position of the first occurrence of the target
value within the array
. You can limit the result to the first occurrence at or after a start
position, and at or before an end
position.
You can find each occurrence in a loop by setting start
at each iteration to the next position after the previous match.
Returns a negative number if the target is not found.
int [] find(<type>array[], <type>target)
int [] find(<type>array[], <type>target, int start)
int [] find(<type>array[], <type>target, int start, int end)
Returns a list of positions of occurrences of the target
value within the array
. You can limit the results to occurrences at or after a start
position, and before an end
position.
-
When you specify an
end
position, it means the matching substring must start before theend
. -
The scalar versions return
-len(haystack)-1
to indicate no matches. This value is intended to cause an error if you try to use it as an index into the string/array. -
Searching for the empty string always fails. This differs from Python.
-
You cannot use negative indices for the
start
andend
arguments.
See also | |
array | |
string |
|