no_discard.cpp

Template for creating lambdas with the nodiscard attribute

Template Parameters

F	The lambda

// Copyright 2022 Tyler Weaver
//
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// modification, are permitted provided that the following conditions are met:
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#include <fp/all.hpp>
 
int main() {
  const auto f = fp::NoDiscard{[] {
    return fp::Error{fp::ErrorCode::UNKNOWN, "yikes!"};
  }};
  fmt::print("{}\n", f());
  // [Error: [Unknown] yikes!]
}