On Wed, Jan 19, 2022 at 09:59:15PM +0000, forkit via Digitalmars-d-learn wrote:
> so I have this code below, that creates an array of tuples.
>
> but instead of hardcoding 5 tuples (or hardcoding any amount of
> tuples), what I really want to do is automate the creation of
> how-ever-many tuples I ask for:
>
> i.e.
>
> instead of calling this: createBoolMatrix(mArrBool);
> I would call something like this: createBoolMatrix(mArrBool,5); //
> create an array of 5 typles.
Why can't you just use a loop to initialize it?
uint[][] createBoolMatrix(size_t n) {
auto result = new uint[][n]; // allocate outer array
foreach (ref row; result) {
row = new uint[n]; // allocate inner array
foreach (ref cell; row) {
cell = cast(uint) rnd.dice(0.6, 1.4);
}
}
return result;
}
Or, if you wanna use those new-fangled range-based idioms:
uint[][] createBoolMatrix(size_t n) {
return iota(n)
.map!(i => iota(n)
.map!(j => cast(uint) rnd.dice(0.6, 1.4))
.array)
.array;
}
T
--
Verbing weirds language. -- Calvin (& Hobbes)
