Re: array function
On Monday, 31 August 2015 at 13:17:30 UTC, cym13 wrote: On Monday, 31 August 2015 at 13:00:49 UTC, Namal wrote: Hey guys, since I am learning D arrays here, can you tell me the best way to remove an element at the end of an array or at some index i? import std.algorithm; T[] arr; arr = arr.remove(index); http://p0nce.github.io/d-idioms/#Adding-or-removing-an-element-from-arrays Also, to remove the last element you can use slices: T[] arr; arr = arr[0..$-1];
Re: array function
On Monday, 31 August 2015 at 13:00:49 UTC, Namal wrote: Hey guys, since I am learning D arrays here, can you tell me the best way to remove an element at the end of an array or at some index i? import std.algorithm; T[] arr; arr = arr.remove(index); http://p0nce.github.io/d-idioms/#Adding-or-removing-an-element-from-arrays
Re: array function
Hey guys, since I am learning D arrays here, can you tell me the best way to remove an element at the end of an array or at some index i?
Re: array function
On Monday, 31 August 2015 at 12:00:26 UTC, bearophile wrote:
Namal:
std::vector foo(int N){
std::vector V(N);
int some_array[N];
VLAs are not present in D.
Bye,
bearophile
Yah, I guess I have been damaged with them when I started to
learn programming in C++ >(
Re: array function
Namal:
std::vector foo(int N){
std::vector V(N);
int some_array[N];
VLAs are not present in D.
Bye,
bearophile
Re: array function
On Monday, 31 August 2015 at 11:27:20 UTC, Rikki Cattermole wrote:
You cannot define static arrays using runtime information.
You must use dynamic arrays.
int[] foo(int N) {
int[] v;
v.length = N;
// do something with it
int[] 2;
return s;
}
Of course you can pass it in via a template argument. But this
of course does not work at runtime like you are wanting.
Hmm, this has never been a problem for me in C++
#include
std::vector foo(int N){
std::vector V(N);
int some_array[N];
std::vector other_V;
return other_V;
}
int main(){
std::vector V = foo(12);
}
compiles
Re: array function
On 31/08/15 11:24 PM, Namal wrote:
Hello,
can someone explain to me please what I am doing wrong by passing an
integer to this function and then just creating a static array? The
error I get is:
Error: variable N cannot be read at compile time
int[] foo(int N){
int[N] v;
//do something with it
int[] s;
return s;
}
void main(){
int N = 12;
int[] A;
A=prim_numbers(N);
}
You cannot define static arrays using runtime information.
You must use dynamic arrays.
int[] foo(int N) {
int[] v;
v.length = N;
// do something with it
int[] 2;
return s;
}
Of course you can pass it in via a template argument. But this of course
does not work at runtime like you are wanting.
