CODEWITHSUNDEEP
c++templates
user718274
user718274

Reputation: 11

Typecasting a template functions return value

I have a template function . This function returns the same template type . Ex: It takes T type variable and return the T type variable. Now can I cast the return type T variable using static cast to Uint32.Will I get any errors

Upvotes: 1

Views: 180

Answers (1)

Matt
Matt

Reputation: 2189

From what I understand you have a function that looks like

template <class T>
T noop (T a) {
  return a;
}

and you want to cast the result of it

uint32 i = static_cast<uint32>(noop(val));

This will succeed if val is of a type that can be cast to uint32 and fail if it isn't.

uint32 i = static_cast<uint32>(noop(uint32(0))); // ok
uint32 i = static_cast<uint32>(noop("asdf")); // not-ok

Upvotes: 7

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