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by grimlck 4126 days ago
How does [0xFF, 0xFF, 0xFF, 0xFF], interpreted as a UInt32 turn into 16777215?

I would have guessed 4294967295
3 comments
Hannan 4126 days ago
I assume it's just a typo/incomplete edit; his graphic directly below has the bit representation 00000000111111111111111111111111 indicating [0x00, 0xFF, 0xFF, 0xFF].
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shurcooL 4126 days ago
It is 4294967295.

http://play.golang.org/p/r8LHo8mfc9

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codygman 4125 days ago
Yep (credit to bkirwi):

    λ> import Data.Bits
    λ> let integerWithBytes = foldr (\byte acc -> (acc `shiftL` 8) + fromIntegral byte) 0
    λ> integerWithBytes [0xFF, 0xFF, 0xFF, 0xFF]
    4294967295
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