Re: map question

2022-01-22 Thread Stanislav Blinov via Digitalmars-d-learn
On Saturday, 22 January 2022 at 19:32:07 UTC, forkit wrote: trying to make sense of the below: // --- module test; import std; void main() { auto rnd = Random(unpredictableSeed); int howManyTimes = 5; // ok - using 'e =>' makes sense writeln(howManyTimes.iota.map!(e => rnd.d

Re: map question

2022-01-22 Thread Ali Çehreli via Digitalmars-d-learn
On 1/22/22 11:32, forkit wrote: > trying to make sense of the below: The generate() solution shown by Stanislav Blinov is suitable here. > auto rnd = Random(unpredictableSeed); Somebody else mentioned this before but none of the programs we've seen so far seemed to need a special random n

Re: map question

2022-01-22 Thread forkit via Digitalmars-d-learn
On Saturday, 22 January 2022 at 19:55:43 UTC, Stanislav Blinov wrote: thanks for the explanation. That really helped :-) writeln( generate!(() => dice(0.6, 1.4)).take(howManyTimes) ); [1, 1, 1, 1, 0] (or after reading Ali's response - getting rid of rnd, and using _ ) writeln( howManyTime

Re: map question

2022-01-23 Thread Stanislav Blinov via Digitalmars-d-learn
On Saturday, 22 January 2022 at 23:54:27 UTC, forkit wrote: On Saturday, 22 January 2022 at 19:55:43 UTC, Stanislav Blinov wrote: thanks for the explanation. That really helped :-) writeln( generate!(() => dice(0.6, 1.4)).take(howManyTimes) ); [1, 1, 1, 1, 0] (or after reading Ali's respons

Re: map question

2022-01-23 Thread Siarhei Siamashka via Digitalmars-d-learn
On Sunday, 23 January 2022 at 09:08:46 UTC, Stanislav Blinov wrote: Using `iota` here incurs additional computation and argument copies that are actually never used, i.e. wasted work. So I'd say go with `generate`, as that seems the intent. Isn't this normally a compiler's job to eliminate all

Re: map question

2022-01-23 Thread Stanislav Blinov via Digitalmars-d-learn
On Sunday, 23 January 2022 at 09:38:57 UTC, Siarhei Siamashka wrote: On Sunday, 23 January 2022 at 09:08:46 UTC, Stanislav Blinov wrote: Using `iota` here incurs additional computation and argument copies that are actually never used, i.e. wasted work. So I'd say go with `generate`, as that see