Re: [sc-users] 2D array question

[amindfv@xxxxxxxxx]

Yeah this is one of those weird object-oriented pass-by-reference instead of pass-by-value things. A simpler example:

x = [0];
y = [x,x];
y[0][0] = 1;
y // == [[1],[1]]

Tom

> El 24 feb 2019, a las 5:02 PM, stefanus@xxxxxxxxx escribió:
> 
> 
> 
>> Am 24.02.19 um 22:30 schrieb nick.colvin@xxxxxxxxx:
>> x = Array.fill(8, Array.fill(8, false));
> 
> You're filling your outer array with 8 identical arrays, hence, setting
> x[0][0] to true also changes the first element in all other arrays
> (which are really the same array as in x[0]).
> 
> Add non-identical arrays like this:
> 
> x = Array.fill(8, { Array.fill(8, false) });
>> x[0][0] = x[0][0].not;
>> x.postln; // only x[0][0] is flipped
>> 
>> x = Array.fill2D(8, 8, false);
>> x[0][0] = x[0][0].not;
>> x.postln; // only x[0][0] is flipped
> 
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