C 11 lambda capture member variable


C++ 11 introduced lambda expression to allow us write an inline function which can be used for short snippets of code that are not going to be reuse and not worth naming. In its simplest form lambda expression can be defined as follows: [ capture clause ] (parameters) -> return-type { definition of method } How not to pass arguments to threads in C++11. Don’t pass addresses of variables from local stack to thread’s callback function. Because it might be possible that local variable in Thread 1 goes out of scope but Thread 2 is still trying to access it through it’s address. If the lambda-expression captures anything by copy (either implicitly with capture clause [=] or explicitly with a capture that does not include the character &, e.g. [a, b, c]), the closure type includes unnamed non-static data members, declared in unspecified order, that hold copies of all entities that were so captured. In this article, we started from the early days of lambda expression in C++03 and C++11, and we moved into an improved version in C++14. You saw how to create a lambda, what’s the basic structure of this expression, what’s capture clause and many more. c++ documentation: Capture by value. ... the lambda will capture it by value. This means that the generated closure type for the lambda stores a copy of the variable ...