Hello,


* What is the D-idiomatic way to remove an element from a dynamic array?

* Ditto, for a slice, but with the 2 variants expression vs statement:
	a.removeSlice(i1, i2);
	a2 = a1.removeSlice(i1, i2);

* Can I rely on
	a.length = a.length - 1
to just remove the last element? If yes, is this considered good practice?


Denis
-- -- -- -- -- -- --
vit esse estrany ☣

spir.wikidot.com

On 19.11.2010 16:11, spir wrote:
> Hello,
>
>
> * What is the D-idiomatic way to remove an element from a dynamic array?
> * Ditto, for a slice, but with the 2 variants expression vs statement:
> 	a.removeSlice(i1, i2);
That would most likely be:
std.array;
int[] a = ...;
replace(a,i1,i2,null);

> 	a2 = a1.removeSlice(i1, i2);
hm, not sure how idiomatic is this:
a2 = a1.dup;
replace(a2,i1,i2,null);
> * Can I rely on
> 	a.length = a.length - 1
> to just remove the last element? If yes, is this considered good practice?
For this one I'd use:
a = a[0..$-1];
this way to me it's more clear how array is changed.
>
> Denis
> -- -- -- -- -- -- --
> vit esse estrany ☣
>
> spir.wikidot.com
>
-- 

Dmitry Olshansky

On 19.11.2010 17:53, Dmitry Olshansky wrote:
> On 19.11.2010 16:11, spir wrote:
>> Hello,
>>
>>
>> * What is the D-idiomatic way to remove an element from a dynamic array?
>> * Ditto, for a slice, but with the 2 variants expression vs statement:
>>     a.removeSlice(i1, i2);
> That would most likely be:
> std.array;
Ehm, that should have been import std.array.
[snip]

-- 
Dmitry Olshansky

spir:

> * Can I rely on
> 	a.length = a.length - 1
> to just remove the last element? If yes, is this considered good practice?

I think it's idiomatic in D, so it's OK.

Currently you may also write that as:
a.length -= 1;
But this is not supported yet:
a.length--;

Bye,
bearophile