On 11/15/2015 05:27 PM, Scott Kostyshak wrote:
The following is not a critique (so please push because of Richard's positive feedback), but if you have time I am curious about the following: strwidth_cache_(1 << 19) How did you decide on 19? And why the trick of 1 << 19 instead of just the following? strwidth_cache_(19) I'm guessing this is a C++ trick I should know.
1 << 19 is a 1 with 19 zeros after it, in binary notation, so is equivalent to 2^19 = 512K but much faster to calculate. This trick is used extensively in debug.h.
Richard
