大约有 41,000 项符合查询结果（耗时：0.0716秒） [XML]
In Vim, I'd like to go back a word. The opposite of `w`
...nd B to advance/go back a WORD (which
consists of a sequence of non-blank characters separated with white space, according to :h WORD).
share
|
improve this answer
|
follow
...
What is move semantics?
...:
#include <cstring>
#include <algorithm>
class string
{
char* data;
public:
string(const char* p)
{
size_t size = std::strlen(p) + 1;
data = new char[size];
std::memcpy(data, p, size);
}
Since we chose to manage the memory ourselves, we need...
string sanitizer for filename
...
Instead of worrying about overlooking characters - how about using a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesyst...
How to show a confirm message before delete?
...message on clicking delete (this maybe a button or an image). If the user selects ' Ok ' then delete is done, else if ' Cancel ' is clicked nothing happens.
...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...e , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothe...
深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...二进制内容，不同的编码环境下显示不一致：
unsigned char j = 0xa1;
for(; j < 0xdf-30; j++)
{
char p[1024];
sprintf(p, "%d\t%02x\t%o\t%c \t %d\t%02x\t%o\t%c", j,j,j,j, j+31,j+31,j+31,j+31);
std::cout << p << std::endl;
}
（整形，十六进制，八进制，字符...
How many and which are the uses of “const” in C++?
...p you to decide when and when not you need to copy.
struct MyString {
char * getData() { /* copy: caller might write */ return mData; }
char const* getData() const { return mData; }
};
Explanation: You might want to share data when you copy something as long as the data of the originally ...
application/x-www-form-urlencoded or multipart/form-data?
...will fail.
The key is to choose an encoding and a boundary such that your selected boundary characters cannot appear in the encoded output. One simple solution is to use base64 (do not use raw binary). In base64 3 arbitrary bytes are encoded into four 7-bit characters, where the output character se...
“sending 'const NSString *' to parameter of type 'NSString *' discards qualifiers” warning
...he term on its right only if there's nothing on its left side (e. g. const char * and a char const * are non-const pointers to const char, but char *const is a const pointer to non-const char).
– user529758
Oct 11 '12 at 4:29
...
How to read a file without newlines?
...works if the file ends with a newline, otherwise the last line will lose a character.
This assumption is true in most cases (especially for files created by text editors, which often do add an ending newline anyway).
If you want to avoid this you can add a newline at the end of file:
with open(th...