On Sunday, December 18, 2011 22:12:07 RenatoL wrote: > 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[0] = 15; // Modify a[0] > assert(b[0] == 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?
Read this: http://www.dsource.org/projects/dcollections/wiki/ArrayArticle It's the best article that there is on arrays and slices and how they work in D. - Jonathan M Davis
