TStringOverload

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A type which wraps a TString parameter but fails (SFINAE) construction if passed a string argument of an incompatible character type. This will allow FString (TString) and FUtf8String (TString) overloads to sit next to each other and direct pointer, array or other TString arguments to the right overload.

This is important because of the legacy of UE's string constructors, which takes anything that looks like a string, of any character width, so overloading - say - FString and FUtf8String will cause overload resolution problems.

The argument should be copied/moved into the real TString instance in order to use it, as this type has no string manipulation ability.

This argument is equivalent to a pass-by-value toboth the lvalue/rvalue overload case. Once , and can be converted back to regular const TString&/TString&& overloads once overloading is no longer required.

Example: void Func(TStringOverload); // called by Func(WideString), Func(MoveTemp(WideString)) or Func(TEXT("String")) void Func(TStringOverload); // called by Func(Utf8String), Func(MoveTemp(Utf8String)), Func(UTF8TEXT("String")) or Func("String") or Func({})

Syntax

template<typename StringType>  
struct TStringOverload  
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template<typename StringType> struct TStringOverload

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