C++workingcpp17

Lambdas and captures

Inline, anonymous functions that can grab variables from the enclosing scope by value or by reference.

[capture](params){ body } builds a callable on the spot — the capture list decides which surrounding variables it sees, mutable lets it keep state, and auto parameters make it generic.

Define and call a lambda

C++intro

0ms

2516hello

Reference · output compiled offline, not runnable in-browser

square behaves like any callable — square(5) is 25 and nesting square(square(2)) squares 4 to 16, while the capture-free greet shows a lambda needs neither parameters nor a capture list.