rexlen at gmail.com
Sun Dec 18 14:12:07 PST 2011
Reading the book from Alexandrescu we can find this (page 103-104,
at least in my edition):
Expanding arrays has a couple of subtleties that concern possible
reallocation of the array. Consider:
auto a = [87, 40, 10, 2];
auto b = a; // Now a and b refer to the same chunk
a ~= [5, 17]; // Append to a
a = 15; // Modify a
assert(b == 15); // Pass or fail?
it seems natural that the test is ok but it is not... if we read
more we find:
"D leaves~= the freedom of either expanding by reallocation or
opportunistically expanding in place if there is enough unused
memory at the end of the current array."
At a first glance this seems to be a serious issue... it seems hard
to accept that b can lost its connection to "a" in a silent mode due
to a reallocation
Is there a safe mode to do this for large arrays?
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