Re: question about find function
- Posted by ghaberek (admin) Feb 13, 2021
- 1131 views
Yes, you're looking for match() not find(). There is a fundamental difference in how these work.
The find() function locates an item in a sequence, and with strings each character is an atom that is an item in the sequence, so you're looking for atoms.
? find( 'D', "ABCDEF" ) 4 ? find( "D", "ABCDEF" ) 0
The match() function locates a matching subset of a sequence, and so with strings you're looking a partial string match in a larger string.
? match( 'D', "ABCDEF" ) -- crashes, expects 'D' to be a sequence ? match( "D", "ABCDEF" ) 4 ? match( "BCD", "ABCDEF" ) 2
And you would use find() to locate a string in a sequence of strings, since those strings are items in the sequence.
? find( "DEF", {"ABC","DEF","GHI"} ) 2
Hope this helps.
P.S. I agree the documentation needs work. I've asked for help contributing updates and corrections to the documentation. Anyone who wants to offer corrections is free to submit pull requests on GitHub: https://github.com/OpenEuphoria/euphoria/pulls.
-Greg
