看larbin源代码,看到一个很巧妙的字符串忽略大小写比较实现
A:65(0100 0001),a:97(0110 0001)
A | 32 == a
a & 0xDF == A
bool startWithIgnoreCase (char *amin, char *b) {
int i=0;
while (amin[i] != 0) {
if (amin[i] != (b[i]|32)) return false;
i++;
}
return true;
}
看larbin源代码,看到一个很巧妙的字符串忽略大小写比较实现
A:65(0100 0001),a:97(0110 0001)
A | 32 == a
a & 0xDF == A
bool startWithIgnoreCase (char *amin, char *b) {
int i=0;
while (amin[i] != 0) {
if (amin[i] != (b[i]|32)) return false;
i++;
}
return true;
}