On Saturday, 15 August 2015 at 18:04:30 UTC, D_Learner wrote:
memcpy(&skip[0], &skip[0]+shift, (m-shift)*(int.sizeof));
memset(&skip[0]+(m-shift),0, shift*(int.sizeof))
I was thinking conversion would be :-
skip[0 .. size-1] = skip[shift .. size-1 ]; //For the
memcpy();
Those two slices have different lengths (when shift != 0). They
must have equal lengths, and they must not overlap.
skip[0 .. size-1] = 0; //For memset()
But this doesn't seem to work for me as dmd(v2.066.1) gives the
"error slice [8..7] exceeds array bounds [0..8]" .Sure am
missing something.
You can just do mechanical translations.
memcpy(dst, src, n * T.sizeof);
becomes
dst[0 .. n] = src[0 .. n];
Then simplify.
Original:
memcpy(&skip[0], &skip[0]+shift, (m-shift)*(int.sizeof));
Identify the pieces:
dst = &skip[0]
src = &skip[0]+shift
n = m-shift
Substitute:
(&skip[0])[0 .. m-shift] = (&skip[0]+shift)[0 .. m-shift];
Simplify:
skip[0 .. m-shift] = skip[shift .. $][0 .. m-shift];
skip[0 .. m-shift] = skip[shift .. shift + m-shift];
skip[0 .. m-shift] = skip[shift .. m];
I sure hope I didn't mess anyting up.
memset is very similar.
memset(dst, val, n * T.sizeof);
becomes
dst[0 .. n] = val;
Then simplify.
