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Why do we use volatile keyword? [duplicate]
...
Consider this code,
int some_int = 100;
while(some_int == 100)
{
//your code
}
When this program gets compiled, the compiler may optimize this code, if it finds that the program never ever makes any attempt to change the value of some_int,...
Best way to format integer as string with leading zeros? [duplicate]
I need to add leading zeros to integer to make a string with defined quantity of digits ($cnt).
What the best way to translate this simple function from PHP to Python:
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When to use std::forward to forward arguments?
...need forward to turn the lvalue-turned x (because it has a name now!) back into an rvalue reference if it was one initially.
You should not forward something more than once however, because that usually does not make sense: Forwarding means that you're potentially moving the argument all the way th...
How to set timer in android?
... long millis = System.currentTimeMillis() - starttime;
int seconds = (int) (millis / 1000);
int minutes = seconds / 60;
seconds = seconds % 60;
text.setText(String.format("%d:%02d", minutes, seconds));
return false;
}
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Linux automake自动编译全攻略 - C/C++ - 清泛网 - 专注C/C++及内核技术
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代码如下：
lib目录下头文件calc.h：
#include <stdio.h>
int add(int a, int b);
lib目录函数实现calc.c：
#include "calc.h"
int add(int a, int b)
{
return a + b;
}
主目录下测试代码test.c：
#include <stdio.h>
#include "lib/calc.h"
int main(i...
Linux automake自动编译全攻略 - 脚本技术 - 清泛IT社区，为创新赋能！
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代码如下：
lib目录下头文件calc.h：
#include <stdio.h>
int add(int a, int b);复制代码lib目录函数实现calc.c：
#include "calc.h"
int add(int a, int b)
{
return a + b;
}复制代码
主目录下测试代码test.c：
#includ...
【解决】标准库std::min/std::max 与 Windows.h中的宏 min/max 冲突问题 - ...
...了Windows h的 C++ 源代码中使用std::min std::max会出现错误。int main(){ int x = std::max(0, 1); int y = std::min(-1, 0);}error C2589: & 在包含了 Windows.h 的 C++ 源代码中使用 std::min/std::max 会出现错误。
int main()
{
int x = std::max(0, 1);
int y...
Android - Set max length of logcat messages
...size for both binary and non-binary logs is ~4076 bytes.
The kernel logger interface imposes this LOGGER_ENTRY_MAX_PAYLOAD limit.
The liblog sources (used by logcat) also say:
The message may have been truncated by the kernel log driver.
I would recommend you the nxlog tool which does n...
What is the best way to concatenate two vectors?
...uestion or not, but can this answer be improved when taking move semantics into account? Is there some way I can expect/instruct the compiler to do a single memory move instead of looping over all elements?
– Broes De Cat
Apr 26 '15 at 21:33
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ruby 1.9: invalid byte sequence in UTF-8
...-op, and no checks are run. Ruby Core Documentation for encode. However, converting it to UTF-16 first forces all the checks for invalid byte sequences to be run, and replacements are done as needed.
– Jo Hund
Aug 11 '13 at 18:32
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