Pos   built-in function

The Pos function returns the offset of the first occurrence of a target string within another string.

If the target string is not found, 0 is returned.

result = Pos( needle, haystack [, offset ] )

needle

the target string to find

haystack

the string that might contain the target string.

offset

an optional offset to begin searching backward. The default is to search from the beginning of the string.

Examples: say Pos( 'abra', 'abracadabra' ) -- shows: 1 say Pos( 'abra', 'abracadabra', 2 ) -- shows: 8 say Pos( 'adra', 'abracadabra' ) -- shows: 0

Note: some Rexx environments support an Index function. This function has the same behavior as the Pos function, but the first two arguments are reversed, i.e.:

result = index( haystack, needle [, offset ] )