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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...,做了delete ip操作,所以释放了内存,不会有内存泄露的问题。
接下来的操作很自然,无需多言:
ptr = rhs.ptr; // 复制U_Ptr指针
val = rhs.val; // 复制int成员
return *this;
做完赋值操作后,那么就成为如下图所示了。红色标注...
Why do people say that Ruby is slow? [closed]
...me:
Ruby 1.9 vs. Python3 within the same order of magnitude
Ruby 1.9 vs. PHP within the same order of magnitude
Ruby 1.9 vs. Java 6 server up to two orders of magnitude slower!
Ruby 1.9 vs. C (gcc) up to two orders of magnitude slower!
...
Why is Ruby considered slow?
Depends on whom you as...
How to assert greater than using JUnit Assert?
...Error: timestamp
Expected: a value greater than <456L>
but: <123L> was less than <456L>
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How to get JQuery.trigger('click'); to initiate a mouse click
... you saved my day $('#asd')[0].click();
– waza123
May 31 '16 at 22:44
Used this to click the next tab on jQuery...
互联网造车运动 - 资讯 - 清泛网 - 专注C/C++及内核技术
...长达十年之久,此外,特斯拉还学习了丰田的质量控制和问题追溯体系,还有奔驰的测试流程,传统汽车企业的支持是特斯拉成功的左右手,这都需要长时间去消化。互联网企业一时半会难以造出获得消费者认可的汽车。
不过...
Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
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shell> ldd /path/to/nginx
libluajit-<VERSION>.so => not found
此类问题通常使用ldconfig命令就能解决:
shell> echo "/usr/local/lib" > /etc/ld.so.conf.d/usr_local_lib.conf
shell> ldconfig
再试着启动Nginx看看,应该就OK了。
应用
我们先用一个简单的程序...
实战做项目如何选择开源许可协议(一)-了解协议 - 开源 & Github - 清泛网...
...所有国家。假如你在美国,许可是从印度授权的,也没有问题。
3)授权免费 无版税, 前期、后期均无任何费用。
4)授权无排他性 任何人都可以获得授权
5)授权不可撤消 一旦获得授权,没有任何人可以取消。比如,你基...
Convert String to double in Java
...l values, you need to replace "," in the number to "."
String number = "123,321";
double value = Double.parseDouble( number.replace(",",".") );
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What is difference between instantiating an object using new vs. without
...
123
The line:
Time t (12, 0, 0);
... allocates a variable of type Time in local scope, generall...
Deadly CORS when http://localhost is the origin
....
The following code works for me with POST to LocalHost with Chrome
<?php
if (isset($_SERVER['HTTP_ORIGIN'])) {
//header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
header("Access-Control-Allow-Origin: *");
header('Access-Control-Allow-Credentials: true');
hea...
