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  1. #include <iostream>
  2.  
  3. void doSomething (int x) {std::cout << "Do something with " << x << std::endl;}
  4.  
  5. struct Base {
  6.     virtual int foo() const {return 5;}
  7.     virtual int goo() const {return 6;}
  8.     virtual int hoo() const {return 7;}
  9.     void noTemplatePattern() const {
  10.         Base(*this).templatePattern();
  11.     }
  12.     void templatePattern() const {
  13.         // Code A
  14.         if (foo() < 6) {
  15.             // Code B
  16.         }
  17.         doSomething (goo());
  18.         // Code C
  19.         if (hoo() > 10) {
  20.             // Code D
  21.         }
  22.     }
  23. };
  24.  
  25. struct Derived : Base {
  26.     virtual int foo() const override {return 12;}
  27.     virtual int goo() const override {return 13;}
  28.     virtual int hoo() const override {return 14;}
  29. };
  30.  
  31. int main() {
  32.     Derived d;
  33.     d.noTemplatePattern();
  34.     d.templatePattern();
  35. }
  36.  
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
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Standard input is empty
stdout
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Do something with 6
Do something with 13
https://ideone.com/ciEL0c
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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