Fab*_*ien 6 bitwise-operators nimrod nim-lang
我刚刚发现了Nimrod并且有一个基本问题(在文档中找不到答案).
你如何使用按位运算?我有以下代码,其中x被定义为int:
if x and 1:
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这不编译:
Error: type mismatch: got (range 0..1(int)) but expected 'bool'
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如果我尝试:
if and(x, 1)
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我明白了
Error: type mismatch: got (tuple[int, int])
but expected one of:
system.and(x: int16, y: int16): int16
system.and(x: int64, y: int64): int64
system.and(x: int32, y: int32): int32
system.and(x: int, y: int): int
system.and(x: bool, y: bool): bool
system.and(x: int8, y: int8): int8
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有什么诀窍?
and
按位; 问题是if
期望a bool
,而不是整数.如果你想要C类比较为0,只需添加它:
>>> if 1:
... echo("hello")
...
stdin(10, 4) Error: type mismatch: got (int literal(1)) but expected 'bool'
>>> if 1!=0:
... echo("hello")
...
hello
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