Re: D idom for removing array elements

[albert-j via Digitalmars-d-learn]

On Monday, 30 January 2017 at 00:17:51 UTC, ag0aep6g wrote:
Removing works by overwriting the array with only the wanted 
values and discarding the rest.

But then why do I get this:

    import std.stdio, std.algorithm, std.array;

    int[] arr;
    foreach (i; 0..10) arr ~= i; // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

    writeln("&arr[0]:", &arr[0]); // prints "7F56FAE93000"

    arr = arr.remove!(x => x > 5).array;

    writeln("&arr[0]:", &arr[0]); // prints "7F56FAE92020"

    writeln("arr:",arr); // prints: "[0, 1, 2, 3, 4, 5]"


It looks like arr.remove allocates new memory and copies the data 
there.