On 3/10/15, Andrea Giammarchi <andrea.giammar...@gmail.com> wrote: > I'm still having hard time understanding what's the difference between > contains and the good old indexOf beside the RegExp check ... but I agree > having multiple explicit searches instead of multiple implicit searches > won't make such big difference. Good news is, you probably will still use > RegExp anyway because names can be composed and haveing a \bName\b helper > is probably what you might need anyway :-) > > i.e. Maria !== Marianne >
What if Array had a contains or containsAll functions? var s = "Maria, Mariana"; var a = s.split(/\s*,\s*/); ["Maria", "Mariana"].every(e=>{return a.indexOf(e)!=-1}); true But a `contains` function might be better than indexOf ["Maria", "Mariana"].every(e=>{return a.contains(e)}); But `containsAll` might be even better. a.containsAll(["Maria", "Mariana"]) seems even easier to read for me. There is already `filter` for exclusions. What about merging arrays? Array.union(array2, array3, ...); > On Tue, Mar 10, 2015 at 3:31 PM, Bergi <a.d.be...@web.de> wrote: > >> Edwin Reynoso wrote: >> >> > There are times where I would like to check whether a string has every >> > occurrence of certain strings/numbers: >> > >> > Now to achieve what I would like `String.prototype.includes` to >> accomplish >> > with an array as the first parameter, I currently take the following >> > approach: >> > >> > var str = "John,Mary,Bob,Steve"; >> > var names = ["Mary", "Bob"]; >> > names.every(name => str.includes(name)); // true; >> >> And that's perfectly fine imho, pretty expressive about what is done >> about >> the array. Just passing an array to `.includes` is rather meaningless >> (not >> denotative). >> >> If we need a method to do this (to allow for native optimisations with >> fancy string search algorithms), I'd suggest to use a different method >> name >> like `String.prototype.includesAll`. >> >> Bergi >> _______________________________________________ >> es-discuss mailing list >> es-discuss@mozilla.org >> https://mail.mozilla.org/listinfo/es-discuss >> > -- Garrett @xkit ChordCycles.com garretts.github.io personx.tumblr.com _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss