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GET URL parameter in PHP

...perglobal: a built-in variable that's populated by PHP and is available in all scopes (you can use it from inside a function without the global keyword). Since the variable might not exist, you could (and should) ensure your code does not trigger notices with: <?php if (isset($_GET['link'])) { ...
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Installing Google Protocol Buffers on mac

I would like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on mac using Terminal command line. I tried with brew install protobuf , but the latest version 2.5.0 has been installed. Is it possible to install the older version from terminal. ...
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Python function overloading

... What you are asking for is called multiple dispatch. See Julia language examples which demonstrates different types of dispatches. However, before looking at that, we'll first tackle why overloading is not really what you want in python. Why Not Overl...
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How to convert JSON data into a Python object

...ry, the order of items will directly correspond.". Good to know for such small, local code blocks. I'd add a comment though to explicitly alert maintainers of code of such a dependency. – cfi Jun 1 '16 at 7:33 ...
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What's the difference between dynamic (C# 4) and var?

...iteLine(s.Length); and string s = "abc"; Console.WriteLine(s.Length); All that happened was that the compiler figured out that s must be a string (from the initializer). In both cases, it knows (in the IL) that s.Length means the (instance) string.Length property. dynamic is a very different b...
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Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

... 没有问题 查看权限 ll .bash_profile -rw--rw--- 1 oracle oinstall 529 10鏈?24 20:18 /home/oracle/.bash_profile 有问题。修改权限 chmod 775 /home/oracle/.bash_profile 进入ORLACE sqlplus /as sysdba SQL> select * from v$log; GROUP# THREAD# SEQUE...
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How do I sort an observable collection?

...the end of the sorted partition from the unsorted. Worst case O(n). Essentially a selection sort (See below for output). public static void Sort<T>(this ObservableCollection<T> collection) where T : IComparable<T>, IEquatable<T> { List<T> sorted = co...
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__FILE__, __LINE__, and __FUNCTION__ usage in C++

...st result in the mangled name. Since I'm not a compiler writer, it's not really my call. – Evan Teran Apr 5 '12 at 3:13 ...
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What is the effect of extern “C” in C++?

...very compiler is required to provide "C" linkage A linkage specification shall occur only in namespace scope All function types, function names and variable names have a language linkage See Richard's Comment: Only function names and variable names with external linkage have a language linkage Two ...
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

...ernel def require_relative(path) require File.join(File.dirname(caller[0]), path.to_str) end end end This allows you to use require_relative as you would in ruby 1.9.2 in ruby 1.8 and 1.9.1. share ...