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Why do libraries define their own true and false?
(pawb.social)
I’m working through the vulkan tutorial and came across GLFW_TRUE and GLFW_FALSE. I presume there’s a good reason but in looking at the docs it’s just defining 1 and 0, so I’m sorta at a loss as to why some libraries do this (especially in cpp?).
Tangentially related is having things like vk_result which is a struct that stores an enum full of integer codes.
Wouldn’t it be easier to replace these variables with raw int codes or in the case of GLFW just 1 and 0?
Coming mostly from C, and having my caps lock bound to escape for vim, the amount of all caps variables is arduous for my admittedly short fingers.
Anyway hopefully one of you knows why libraries do this thanks!
CONST False = 0, True = NOT False
NOT as in the binary operator. What's NOT of 0 in a 32 bit space? 0xFFFFFFFF, which is -1, which is ≠ 1
Different languages, and even different programmers might interpret the concept and definition of True and False differently, so to save any ambiguity and uncertainty, defining your own critical constants in your own library helps make sure your code is robust.
So... all that is NOT False either, I presume?
they mean every bit is different
I don't know; their comment seemed pretty much the same throughout...