isocpp / isocpp/CppCoreGuidelines

F.40 : "Use a lambda.." : incorrect assertion that function objects don't overload?

Open
#512 2 comments 0 reactions 1 assignee View on GitHub

@hsutter is already working on this.

Since Feb 1, 2016.

open
Dominant language
CSS
Stars
45.3k
Forks
5.6k
PR merge metrics
No merged PRs in 30d

Description

The text says:
"On the other hand, lambdas and function objects don't overload; if you need to overload, prefer a function..".

I was confused by this. The operator() for a "function object" is overloadable. e.g:

struct foo {
void operator()(int) { std::cout << "first" << std::endl; }
void operator()(double) { std::cout << "second" << std::endl; }
};

Can the text be clarified?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.