大约有 41,000 项符合查询结果（耗时：0.0308秒） [XML]
What breaking changes are introduced in C++11?
...hose for others to elaborate on.
Core language
#define u8 "abc"
const char *s = u8"def"; // Previously "abcdef", now "def"
#define _x "there"
"hello"_x // now a user-defined-string-literal. Previously, expanded _x .
New keywords: alignas, alignof, char16_t, char32_t, constexpr, declt...
How to delete duplicate lines in a file without sorting it in Unix?
... <sniff> makes me sad. ;) Anyways, [ -~] represents a range of ASCII characters from 0x20 (space) to 0x7E (tilde). These are considered the printable ASCII characters (linked page also has 0x7F/delete but that doesn't seem right). That makes the solution broken for anyone not using ASCII or an...
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...
How to persist a property of type List in JPA?
...<List<String>, String> {
private static final String SPLIT_CHAR = ";";
@Override
public String convertToDatabaseColumn(List<String> stringList) {
return String.join(SPLIT_CHAR, stringList);
}
@Override
public List<String> convertToEntityAttri...
Undefined, unspecified and implementation-defined behavior
...t's look at a classic example:
#include <iostream>
int main()
{
char* p = "hello!\n"; // yes I know, deprecated conversion
p[0] = 'y';
p[5] = 'w';
std::cout << p;
}
The variable p points to the string literal "hello!\n", and the two assignments below try to modify tha...
Generic type parameter naming convention for Java (with multiple chars)?
...rfaces I wrote I'd like to name generic type parameters with more than one character to make the code more readable.
5 Answ...
Best way to track onchange as-you-type in input type=“text”?
...e', inputHandler); // for IE8
// Firefox/Edge18-/IE9+ don’t fire on <select><option>
// source.addEventListener('change', inputHandler);
<input id="source">
<div id="result"></div>
...
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
...
Regex doesn't work in String.matches()
...wercase letters, you can use .matches(), but you need to match one or more characters: append a + to your character class, as in [a-z]+. Or use ^[a-z]+$ and .find().
share
|
improve this answer
...
C/C++ check if one bit is set in, i.e. int variable
...
What the selected answer is doing is actually wrong. The below function will return the bit position or 0 depending on if the bit is actually enabled. This is not what the poster was asking for.
#define CHECK_BIT(var,pos) ((var) &...