I have noticed that there is no direct solution but also I can think of at least two ways of implementing it.
What I'd like to know what is the best solution performance-wise?
Turn a string into and array, use splice, return to string
Use string s = s.substring(0,i)+s.substring(i,s.lenght)
Something I've missed
EDIT: What's wrong with my question and is there some faster way to do this? I want to do this around a tousand times on a string so I need it to be fast
I runned it on a JSPERF and substrings is a little bit faster then doing a splice !
Edit:
substring is pretty fast, my computer ran this function:
var str = "I love cookies"
str = str.substring(0, 1) + " really" + str.substring(1);
756 333 times in 0.053 secondes !
The second function's signature is identical to the Array.prototype.splice method.
function mutate(s) {
return function splice() {
var a = s.split('');
Array.prototype.splice.apply(a, arguments);
return a.join('');
};
}
mutate('101')(1, 1, '1');
Hope this is what you're looking for!
