On Wednesday, 2 March 2016 at 20:07:30 UTC, Jacob Carlborg wrote:
On 2016-03-02 21:01, Ozan wrote:
I agree for slices, but typically variables should have his
own data.
int a = 1:
int b = a; // data copy
int[] a;
int[] b = a; // pointer copy
is not the same and should be avoid.
Same thing for objects which are reference types.
Yes, but D handles basic datatypes (int, char, ...) different to
objects (similar to Java).
And again an assignment like int[] b = a has his risks which
should be avoid in language design. Reading code requires some
experience but should would like expected from other languages.
From security point of view I would recommend a style like
int[] b = a; // data copy
int[] b = a.ptr; // pointer copy, b & a pointing to the same
data. a == b / a is b
Better as int* b = a.ptr; which has same risks like in C
int[] b = a.slice; // slice "copy", same data but with mighty
slices, a ?= b / a !is b
int[] b = a.dup; // data copy, a == b / a !is b
Regards, Ozan
