How to choose parameters can accept lambda, at the same time the function, the function pointer-CodePudding

Why can't the lambda automatically pushed to function

CodePudding user response:

can use a template or function as a parameter

Using func=STD: : functionUsing functptr=void (*) (void);

Template
Void f1 (t& & Func) {
Func ();
}
Template
Void f1 (t& & First, u& & . Another) {
F1 (first);
F1 (another... );
}

Void f2 (func f) {
(f);
}

Int main () {
Auto test1=[] () {STD: : cout & lt; <"Lambda"; };
Func test2=[] () {STD: : cout & lt; <"Function"; };
Functptr test3=[] () {STD: : cout & lt; <"The function pointer"; };
/*
STD: : cout & lt; */
F1 (test1 and test2 and test3);
//print the lambda function fuction pointer
F2 (test1); F2 (test2); F2 (test3);
//print the lambda function fuction pointer
}

CodePudding user response:

Pointer to void * is universal

CodePudding user response:

Use Pointers can receive directly,

CodePudding user response:

 
The template & lt; The class T> 
Void foreach (const STD: : vector & StrVec, T callable) 
{
For (size_t I=0; i If (callable (strVec [I]) {//... } else {//... } 
} 
}

CodePudding user response:

Can you? Who said no