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adding functor example

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This commit is contained in:
Jidong Xiao
2023-11-20 16:47:40 -05:00
parent 960874cc38
commit 4e0a37792b
1 changed files with 4 additions and 2 deletions
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6
lectures/21_hash_tables_II/README.md
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@@ -17,11 +17,13 @@ but powerful.
```cpp ```cpp
class my_class_name { class my_class_name {
public: public:
// ... normal class stuff ... // ... normal class stuff ...
my_return_type operator() ( /* my list of args */ ); my_return_type operator() ( /* my list of args */ );
}; };
``` ```
- See and run this simple functor [example](functor.cpp).
## 21.2 Why are Functors Useful? ## 21.2 Why are Functors Useful?
- One example is the default 3rd argument for std::sort. We know that by default STL’s sort routines will use - One example is the default 3rd argument for std::sort. We know that by default STL’s sort routines will use