template <class T> struct is_integral;
fundamental integral types |
---|
bool |
char |
char16_t |
char32_t |
wchar_t |
signed char |
short int |
int |
long int |
long long int |
unsigned char |
unsigned short int |
unsigned int |
unsigned long int |
unsigned long long int |
成员类型 | 定义 |
---|---|
value_type | bool |
类型 | true_type 或 false_type |
成员常量 | 定义 |
---|---|
值 | 是true或false |
|
|
is_integral: char: true int: true float: false |