Sort a vector of struct based on a specific field

Question

Currently I am trying to sort a vector of structs based on a specific field. I have set up a custom comparison function for the use of the sort function. However, i am getting some errors with it. Code: ``` struct Play{ int min, down, yard, locat; string Description, offname, defname; double relevance; }; bool customCompare(const Play &x, const Play &y) { return (x.relevance < y.relevance); } void printResults() { sort(vecData.begin(),vecData.end(), customCompare); }` ``` Errors: ``` error C3867: 'List::customCompare': function call missing argument list; use '&List::customCompare' to create a pointer to member error C2780: 'void std::sort(_RanIt,_RanIt)' : expects 2 arguments - 3 provided ```

Accepted Answer

a) Use sort function with lambda notation as below( if you are using c++11)

```
 sort(vecData.begin(),vecData.end(), [](const Play &x, const Play &y){ return (x.relevance < y.relevance);});
```

Working code:

http://ideone.com/bDOrBV

b) Make comparator function as static

http://ideone.com/0HsaaH

Sort a vector of struct based on a specific field

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