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How to use C++ in Go
...class defined as:
// foo.hpp
class cxxFoo {
public:
int a;
cxxFoo(int _a):a(_a){};
~cxxFoo(){};
void Bar();
};
// foo.cpp
#include <iostream>
#include "foo.hpp"
void
cxxFoo::Bar(void){
std::cout<<this->a<<std::endl;
}
which I want to use in Go. I'll use the C inter...
How to set JAVA_HOME in Linux for all users
... file like /etc/profile.d/jdk_home.sh
export JAVA_HOME=/usr/java/jdk1.7.0_05/
You have to remember that this file is only loaded with new login shells.. So after bash -l or a new gnome-session and that it doesn't change with new Java versions.
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How to express a NOT IN query with ActiveRecord/Rails?
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edited Nov 27 '14 at 16:05
answered Apr 14 '11 at 17:02
P...
What is the correct way of using C++11's range-based for?
...f using for (const auto& x : v) just fails to compile.
g++ outputs an error message something like this:
TestRangeFor.cpp:138:11: error: assignment of read-only reference 'x'
x *= 10;
^
The correct approach in this case is capturing by non-const reference:
vector<...
JavaScript isset() equivalent
...
the problem with this is that you get an error when you try to check deeper properties, for example: obj.thisdoesntexist.foo !== undefined. In PHP you can use isset or empty and safely at any deep.
– Enrique
Aug 21 '11 at 16:35...
How can I configure my makefile for debug and release builds?
...uild debug/release into its own folders. Example: stackoverflow.com/a/48793058/412080
– Maxim Egorushkin
Jul 9 '18 at 9:23
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While loop to test if a file exists in bash
...some time.
PS This also causes an annoying number of "Stale file handler" errors.
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How can I generate a unique ID in Python? [duplicate]
...have to manually kill uuidd as root. I worked around this by setting uuid._uuid_generate_time and uuid._uuid_generate_random to None so the uuid module never used the native implementation. (That should really be an option anyway; generating V4 random UUIDs causing a daemon to be started is comple...
boost自定义composite_key_compare比较函数 - C/C++ - 清泛网 - 专注C/C++及内核技术
boost自定义composite_key_compare比较函数composite_key_compare指定boost多容器元素的比较方法，当然我们也可以自定义比较函数。另外，如果调试过程中遇到很奇怪的问题，可以在自定义比较函数中下断点进行调试。
// boost_demo.cpp : 定义...
OpenSuSE 安装bpftrace - 操作系统(内核) - 清泛网 - 专注IT技能提升
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zypper install bcc-devel
#zypper install bcc-devel-0.22.0-lp151.127.1.x86_64 #安装失败的话，可以尝试
3、安装bpftrace（参考：INSTALL.md）：
OCICLI https://software.opensuse.org/ymp/home:pavlix:Kernel/openSUSE_Leap_15.1/bpftrace.ymp
4、验证：
bpftrace
USAGE:
...