Lambda Expressions in C++0x

Krishnaraj Varma — Sun, 29 Jun 2008 06:47:55 +0000

Lambda expressions are coming to C++. In the next version of C++ standard, C++0x, lambda expressions will be included.

In C++0x a lambda expressions is in the form of [...](…}{…} where

1. [...] indicates it is a lambda expression
2. (…) declares the parameters
3. {…} defines the expressions ie. the code of the lambda expression

example:
// vector to store some integer values std::vector v;


// Add some values

v.push_back(1);

v.push_back(2);

v.push_back(3);   
// print the values

std::for_each(v.begin(); v.end(), [&]( const int& n ) { cout << n << " "; });
int nTotal = 0;

// find the total std::for_each(v.begin(); v.end(); [&total](int n){ total+=n; });
This document describes the lambda expression proposal. For a detailed explanation visit Herb Sutter's post.

krishnaraj varma's blog » C++ox

Lambda Expressions in C++0x