Lambda notation and inline function are used by the compiler to place the execution code at the exact position for optimized run time efficiency

1. INLINE FUNCTION
The lambda function declaration type and Inline

2. NORMAL FUNCTION
 Function definition is above main()
 Function is called inside main()
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
void assign(int& v){
static int n = 1; v = n++;
}
void print(int v){
cout << v << " ";
}
int main(){
vector<int> vec(10);
for_each(vec.begin(), vec.end(), print);
for_each(vec.begin(), vec.end(), assign);
for_each(vec.begin(), vec.end(), print);
return 0;
}
Assign
Print

3. LAMBDA FUNCTIONS
 C++11 provides the ability to create anonymous functions, called lambda
functions.
 It allows a function to be defined at the point where it's needed in another
expression.
 It is a function that we can write inline in our code in order to pass in to another
function.

4. LAMBDA DECLARATION AND CALLS
Assign
Print
Print
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main(){
vector<int> vec(10);
for_each(vec.begin(), vec.end(), [ ](int v){cout << v << " “;});
for_each(vec.begin(), vec.end(), [ ](int& v){ static int n = 1; v = n++;});
for_each(vec.begin(), vec.end(), [ ](int v){cout << v << " “;});
return 0;
}

5. MORE ABOUT LAMBDA
 It is a function creation inside another function
 Output = function (input, input, [ ](output){definition});
 This call causes to runtime create variables
 It is not available in < g++11 versions so for that we use another procedure called
inline

6. INLINE FUNCTION
Write inline with the function name before the output type
InlineType Name (inputs..)
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
Inline void assign(int& v){
static int n = 1; v = n++;
}
Inline void print(int v){
cout << v << " ";
}
int main(){
vector<int> vec(10);
for_each(vec.begin(), vec.end(), print);
for_each(vec.begin(), vec.end(), assign);
for_each(vec.begin(), vec.end(), print);
return 0;
}
Assign
Print
Print

7. MORE ABOUT INLINE
Inline functions are the functions which on call by the compiler are copied to the
set. Where ever the function call is found it is replaced by its code. Inline
functions are declared by adding Inline keyword in front of the name. Rest they
have same defining pattern as normal function.

8. INLINEVS LAMBDA NOTATION FUNCTION
(INLINE IS NOT A REPLACEMENT OF LAMBDA DECLARATION)
 Lambda functions, as they are called, are a way of creating a object that
represents a function.
 The object is then commonly passed to other functions to control how the other
functions work.
 Take a look at sort() or transform() from the standard library to see what I mean.
(There's some templates involved to make this work in C++, but that's outside the
scope of this answer.)
 Inline function is always available for call whereas Lambda is gone with
the call.
 Thus, these two things are pretty much unrelated to each other.They're not
substitutes of each other in any way at all.