Visual C++ Code Snippets
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In Visual Studio, you can use code snippets to add commonly-used code to your C++ code files. In general, you can use code snippets in much the same way as in C#, but the set of default code snippets is different.
You can either add a code snippet at a particular location in your code (insertion) or surround some selected code with a code snippet.
To insert a code snippet, open a C++ code file (.cpp or .h), click somewhere inside the file, and do one of the following:
Right-click to get the context menu and select Insert Snippet
In the Edit / IntelliSense menu, select Insert Snippet
Use the hotkeys: CTRL + K + X
You should see a list of choices beginning with #if. When you select #if, you should see the following code added to the file:
#if 0 #endif // 0
You can then replace the 0 with the correct condition.
To use a code snippet to surround selected code, select a line (or multiple lines) and do one of the following:
Right-click to get the context menu and select Surround With
In the Edit / IntelliSense menu, select Surround With
Use the hotkeys: CTRL + K + S
Select #if. You should see something like this:
#if 0 #include "pch.h" // or whatever line you had selected #endif // 0
You can then replace the 0 with the correct condition.
You can find the complete list of C++ code snippets by going to the Code Snippets Manager (on the Tools menu) and setting the Language to Visual C++. In the window below, expand Visual C++. You should see the names of all the C++ code snippets in alphabetical order.
The names of most code snippets are self-explanatory, but some names might be confusing.
The class snippet provides the definition of a class named MyClass, with the appropriate default constructor and destructor, where the definitions of the constructor and destructor are located outside the class:
class MyClass { public: MyClass(); ~MyClass(); private: }; MyClass::MyClass() { } MyClass::~MyClass() { }
The classi code snippet also provides the definition of a class named MyClass, but the default constructor and destructor are defined inside the class definition:
class MyClass { public: MyClass() { } ~MyClass() { } private: };
There are four different for snippets that provide different kinds of for loops.
The for snippet provides a for loop in which the condition is based on the length (in size_t) of an object:
for (size_t i = 0; i < length; i++)
{
}
The foreach snippet provides a for each loop that iterates over the members of a collection:
for each (object var in collection_to_loop) { }
The forr snippet provides a reverse for loop in which the condition is based on the length (in integers) of an object:
for (int i = length - 1; i >= 0; i--) { }
The rfor snippet provides a range-based for loop (link):
for (auto& i : v) { }
The destructor snippet (~) shows different behavior in different contexts. If you insert this snippet inside a class, it provides a destructor for that class. For example, given the following code:
class SomeClass {
};
If you insert the destructor snippet, it provides a destructor for SomeClass:
class SomeClass {
~SomeClass()
{
}
};
If you try to insert the destructor snippet outside a class, it provides a destructor with a placeholder name:
~TypeNamePlaceholder()
{