Can Lambdas Utilize constexpr?
In earlier versions of C , the inclusion of lambda functions in constant expressions was restricted, as outlined in [expr.const]/(2.6). However, N4487, included in the working draft N4582, introduces a change that allows lambdas to be used in these expressions.
Syntax for Constexpr Lambdas
The proposed change in N4487 provides guidelines for the correct syntax when using lambdas in constant expressions:
Workarounds for Earlier C Versions
For C versions prior to the implementation of N4487, alternative approaches are necessary to use lambdas in constant expressions. One workaround involves utilizing template metaprogramming techniques to achieve the desired functionality.
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