大约有 42,000 项符合查询结果（耗时：0.0454秒） [XML]
C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...&15;
printf("a=%d\tb=%d\n",a,b);
}
请再看一例!
main(){
char a='a',b='b';
int p,c,d;
p=a;
p=(p<<8)|b;
d=p&0xff;
c=(p&0xff00)>>8;
printf("a=%d\nb=%d\nc=%d\nd=%d\n",a,b,c,d);
}
六、 右移运算符(>>)
1、运算规则
用来将一个...
Still Reachable Leak detected by Valgrind
...d are almost always leaks.
Here is an example
int foo(void)
{
static char *working_buf = NULL;
char *temp_buf;
if (!working_buf) {
working_buf = (char *) malloc(16 * 1024);
}
temp_buf = (char *) malloc(5 * 1024);
....
....
....
}
Valgrind will report wo...
How can I perform a reverse string search in Excel without using VBA?
...STITUTE(A1," ","")))))
If your original strings could contain a pipe "|" character, then replace both in the above with some other character that won't appear in your source. (I suspect Brad's original was broken because an unprintable character was removed in the translation).
Bonus: How it work...
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
...ual const QMetaObject *metaObject() const; virtual void *qt_metacast(const char *); virtual int qt_metacall(QMetaObject::Call, int, void **); static inline QString tr(const char *s, cons
t char *c = nullptr, int n = -1) { return staticMetaObject.tr(s, c, n); } __attribute__ ((__deprecated__)) static...
using extern template (C++11)
....cpp
template<typename T>
void f(){}
// Explicit instantiation for char.
template void f<char>();
Main.cpp
#include "TemplHeader.h"
// Commented out from OP code, has no effect.
// extern template void f<T>(); //is this correct?
int main() {
f<char>();
return 0...
How does `is_base_of` work?
...;B, D>&)
D* (Host<B, D>&)
This would mean that we can't select by constness anymore. In an ordinary overload resolution scenario, the call would now be ambiguous because normally the return type won't participate in overload resolution. For conversion functions, however, there is ...
逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...能是C语言的内部函数，于是查到其定义为：int sscanf(const char *str, const char *format,…)，给出一个使用实例：sscanf(“s 1”, “%s %d”, str, &a)，函数返回2（因为接收了2个参数），str为char*类型，保存”s”；a为int类型，保存1。由此，...
How to Truncate a string in PHP to the word closest to a certain number of characters?
...t sentence or two; but for this widget I can't display more than, say, 200 characters. I could use substr() to chop off the text at 200 chars, but the result would be cutting off in the middle of words-- what I really want is to chop the text at the end of the last word before 200 chars.
...
MySQL: Large VARCHAR vs. TEXT?
... @Pacerier another interesting example is mentioned in the comments of the selected answer, basically he had a front-end limit of 2,000 characters but the characters introduced were in a codepage that in reality used more bytes than normal letters, his database ended up needing space for 24k charact...
How many characters can UTF-8 encode?
...s 8 bits, does it not mean that there can be only maximum of 256 different characters?
10 Answers
...