On 27-05-2012 08:50, Era Scarecrow wrote:
Curiously I'm making a huffman compression algo for fun, however I didn't see anything in std.array or anywhere that was to support bools specifically (in a packed form anyways). So I'm making one. So far I've got it saving the data as uint, 0 refers to the most significant bit and 7 the least significant, so A will come out as 0100001 and look rightIt supports a range, however foreach doesn't like using front/popFront/empty if I make opApply. It supports slices as well. For the BitArray, using it as follows I get an error: struct BitArray { alias length opDollar; alias length __dollar; int length(); Range opSlice(); Range opSlice(int s, int e); struct Range { int opDollar(); } } BitArray ba = BitArray(someArrayOfUbyte); auto range = ba[0 .. $]; //needs to access 'this' for length? shouldn't it rewrite to ba[0 .. ba.opDollar()] ? auto range2 = ba[]; //works fine It also seems the BitArray (but not the range) requires __dollar rather than opDollar, however an alias seems to fix that. (Why is this?? the Range doesn't need a __dollar alias to work right) I also have it so you can ref the individual bools (by using an intermediate one in opApply). So.. //perfectly fine in unittest foreach(ref r_b; range) { r_b = !r_b; }
std.bitmanip.BitArray. -- Alex Rønne Petersen a...@lycus.org http://lycus.org
