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Allow user to set up an SSH tunnel, but nothing else
...o set up an SSH tunnel to a particular machine on a particular port (say, 5000), but I want to restrict this user as much as possible. (Authentication will be with public/private keypair).
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How to return multiple values? [duplicate]
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biniam
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answered Dec 19 '11 at 6:10
Aravind YarramAravind...
Is List a subclass of List? Why are Java generics not implicitly polymorphic?
...nimals = dogs; // Awooga awooga
animals.add(new Cat());
Dog dog = dogs.get(0); // This should be safe, right?
Suddenly you have a very confused cat.
Now, you can't add a Cat to a List<? extends Animal> because you don't know it's a List<Cat>. You can retrieve a value and know that it ...
Detect changes in the DOM
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2015 update, new MutationObserver is supported by modern browsers:
Chrome 18+, Firefox 14+, IE 11+, Safari 6+
If you need to support older ones, you may try to fall back to other approaches like the ones mentioned in this ...
jQuery parent of a parent
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answered Jun 8 '09 at 19:11
Paolo BergantinoPaolo Bergantino
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自动生成Linux下Makefile全攻略（automake原理） - C/C++ - 清泛网 - 专注C/C++及内核技术
...IT(dir1/code2.c)
#指定项目名称和版本号
AM_INIT_AUTOMAKE(prog1, 0.0.1)
#检查编译器
AC_PROG_CC
#输出Makefile文件
AC_OUTPUT(Makefile dir1/Makefile)
那么它是怎样生成Makefile的呢？下面通过一个Shell脚本简要说明一下执行步骤及输出：
#!/bin/sh
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How to keep a git branch in sync with master
...-Rebasing
– concept47
May 2 '13 at 10:19
2
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How to skip over an element in .map()?
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answered Jul 17 '14 at 14:50
PointyPointy
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Volatile vs Static in Java
...oper synchronisation!
For instance:
private static volatile int counter = 0;
private void concurrentMethodWrong() {
counter = counter + 5;
//do something
counter = counter - 5;
}
Executing concurrentMethodWrong concurrently many times may lead to a final value of counter different from zer...
C++ - passing references to std::shared_ptr or boost::shared_ptr
...d_message(std::shared_ptr<std::string> msg)
{
previous_message = 0;
std::cout << *msg << std::endl;
previous_message = msg;
}
So, before we start sending we discard the current previous message, and then after the send is complete we can store the new previous message...