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Merge pull request #18 from rob100/cpp_cast

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Prefer C++-style cast
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Jason Turner
2015-06-05 06:26:41 -06:00
parent e0ce0f9183 d9a035cbc4
commit 525b526e94
1 changed files with 13 additions and 0 deletions
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04-Considering_Safety.md
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@@ -67,6 +67,19 @@ Exceptions cannot be ignored. Return values, such as using `boost::optional`, ca
Stroustrup, the original designer of C++, [makes this point](http://www.stroustrup.com/bs_faq2.html#exceptions-why) much better than I ever could.
## Use C++-style cast instead of C-style cast
Use the C++-style cast(static\_cast<>, dynamic\_cast<> ...) instead of the C-style cast. The C++-style cast allows more compiler checks and is considerable safer.
```cpp
// Bad Idea
double x = getX();
int i = (int) x;
// Good Idea
int i = static_cast<int>(x);
```
Additionaly the C++ cast style is more visible and has the possiblity to search for.
## Additional Resources
[How to Prevent The Next Heartbleed](http://www.dwheeler.com/essays/heartbleed.html) by David Wheeler is a good analysis of the current state of code safety and how to ensure safe code.