String slice assignment

[Ron Garret]

Is there a way to do string slice assignment in Javascript other than
tearing the string apart and reassembling it? I want to do the
equivalent of:

s1[x:y] = s2

in Python. Is there a better way than (something like) this?

s1 = s1.slice(0,x) + s2 + s1.slice(y)

Thanks,
rg

 

[Lasse Reichstein Nielsen]

Is there a way to do string slice assignment in Javascript other than
tearing the string apart and reassembling it?

No. Strings in Javascript are immutable, so you can't assign to a
slice of a string.

I want to do the
equivalent of:

s1[x:y] = s2

in Python. Is there a better way than (something like) this?

s1 = s1.slice(0,x) + s2 + s1.slice(y)

Not really, no.

/L

 

[Ron Garret]

Is there a way to do string slice assignment in Javascript other than
tearing the string apart and reassembling it?

No. Strings in Javascript are immutable, so you can't assign to a
slice of a string.

I want to do the
equivalent of:

s1[x:y] = s2

in Python. Is there a better way than (something like) this?

s1 = s1.slice(0,x) + s2 + s1.slice(y)

Not really, no.

OK, just thought I'd ask. Thanks.

rg

 

[Thomas Allen]

No. Strings in Javascript are immutable, so you can't assign to a
slice of a string.

I want to do the
equivalent of:
s1[x:y] = s2
in Python.  Is there a better way than (something like) this?
s1 = s1.slice(0,x) + s2 + s1.slice(y)

Not really, no.

OK, just thought I'd ask.  Thanks.

This got me thinking about writing a little String.prototype method,
but due to Strings' immutability, there's no way to change the value
from within the method. This is a little better though if you find
yourself doing that sort of substitution frequently.

String.prototype.rangeReplace = function(x, y, str) {
return this.slice(0, x) + str + this.slice(y);
}
newGreeting = 'Hello'.rangeReplace(1, 3, 'oh');

Thomas