是否有<条码>等值:
#define HashTabOf(i) htab[i]
and
#define MAXCODE(n_bits) (((code_int) 1 << (n_bits)) - 1)
?
该守则正在从C到C++。
是否有<条码>等值:
#define HashTabOf(i) htab[i]
and
#define MAXCODE(n_bits) (((code_int) 1 << (n_bits)) - 1)
?
该守则正在从C到C++。
并非类型,而C++方式是:
template <typename T>
inline T &HashTabOf(size_t i)
{
return htab[i];
}
以及
inline size_t MAXCODE(size_t n_bits)
{
return (1 << n_bits) - 1;
}
我将采用@Dani模板解决方案,即:
inline auto & HashTabOf(size_t i) -> decltype(htab[0])
{
return htab[i];
}
只在C++11中有效。 它使用一个称为trailing-return-type。 C++11介绍。
解决该问题的好事是,它不是一个模板。 无需提及<代码>T。 当你使用时,在@Dani的解决办法中,你必须提及<代码>。 T 此外:
auto item = HashTabOf<Type>(4); //Dani s solution
auto item = HashTabOf(4); //My solution
是的,你可以简单地写道:
inline int & HashofTable(size_t i)
{
return htab[i];
}
另外,为什么不直接使用<代码>htab[i]?
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