大约有 15,900 项符合查询结果（耗时：0.0282秒） [XML]
记一次数据库表自增长（Auto Increment）故障 - 数据库(内核) - 清泛网 - ...
...不妨创建一个测试表说明问题：
CREATE TABLE IF NOT EXISTS `test` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB;
然后插入一行问题数据：
INSERT INTO test (id, name) VALUES (2147483647, 'x');
结果导...
PHP操作MongoDB时的整数问题及对策 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...);
$instance = new Mongo();
$instance = $instance->selectCollection('test', 'test');
for ($i = 0; $i < 10; $i++) {
$instance->insert(array(
'group_id' => rand(1, 5),
'count' => rand(1, 5),
));
}
?>
下面让我们使用group操作，根据group_id分组...
.reg文件删除注册表项和值 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 前放置一个连字符 (-)。例如，要从以下注册表项中删除 Test 子...要使用 .reg 文件删除注册表项，请在 .reg 文件中的 RegistryPath 前放置一个连字符 (-)。例如，要从以下注册表项中删除 Test 子项：
HKEY_LOCAL_MACHINE\Software
请在 .reg 文...
Linux scp 远程文件上传下载，指定端口 - 操作系统(内核) - 清泛网 - 专注C...
...载，指定端口linux-scp1、默认22端口上传、下载文件：scp test tgz root@xxx xxx xxx xxx: tmpscp root@xxx xxx xxx xxx: tmp test tgz 2、指定端口：scp -P8888 root@xxx xxx xxx xxx: tmp test tgz 1、默认22端口上传、下载文件：
scp test.tgz root@xxx.xxx.xxx.xxx:/tmp
s...
Switch statement for greater-than/less-than
...but I thought it was better to benchmark it and share the results. You can test it yourself. Below are my results (ymmv) normalized after the fastest operation in each browser (multiply the 1.0 time with the normalized value to get the absolute time in ms).
Chrome Firefox Oper...
How does the “final” keyword in Java work? (I can still modify an object.)
...ance variables.
import java.util.ArrayList;
import java.util.List;
class Test {
private final List foo;
public Test() {
foo = new ArrayList();
foo.add("foo"); // Modification-1
}
public void setFoo(List foo) {
//this.foo = foo; Results in compile time error...
Most simple but complete CMake example
...ECURSE sources src/main/*.cpp src/main/*.h)
file(GLOB_RECURSE sources_test src/test/*.cpp)
file(GLOB_RECURSE data resources/*)
# you can use set(sources src/main.cpp) etc if you don't want to
# use globing to find files automatically
############################################################...
What's a good way to extend Error in JavaScript?
...e object that is being thrown. Those things are guaranteed to be correct.
Test cases I used can be found here: JavaScript self-made Error object comparison.
share
|
improve this answer
|
...
Best way to detect Mac OS X or Windows computers with JavaScript or jQuery
...r.platform property is not spoofed when the userAgent string is changed.
I tested on my Mac if I change the userAgent to iPhone or Chrome Windows, navigator.platform remains MacIntel.
The property is also read-only
I could came up with the following table
Mac Computers
Mac68K ...
how to convert from int to char*?
...ger64ToCharArray(int64_t value);
https://github.com/JeremyDX/All-Language-Testing-Code/blob/master/C%2B%2B%20Examples/IntegerToCharArrayTesting.cpp
Feel free to try cleaning that code up without hindering performance.
Input: Any signed 64 bit value from min to max range.
Example:
std::cout <...