在阅读Python的格式规范迷你语言时,
format_spec ::= [[fill]align][sign][#][0][width][,][.precision][type]
fill ::= <any character>
align ::= "<" | ">" | "=" | "^"
sign ::= "+" | "-" | " "
width ::= integer
precision ::= integer
type ::= "b" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" | "n" | "o" | "s" | "x" | "X" | "%"
语法真让我困惑.
例如,如果我想将int转换为二进制表示,我可以这样做
"{0:b}".format(100)
"{:b}".format(100) # but this is fine too, so what dose the 0 do? …我找到这段代码：
int mid = (l & r) + ((l ^ r) >> 1)
这与以下相同mid=(l+r)/2
但我不明白为什么？
有什么帮助吗？谢谢！