问题
Note: marked as community wiki.
In recent days, I've realized how little I know about C++.
Besides:
- using the STL
- implementing RAII
- implementing ref-counted smart pointers
- writing my own policy-based template classes
- overloading operators << for fun
What other techniques are must-know for a good C++ programmer?
Thanks!
回答1:
I think this should cover it:
More C++ Idioms - Wikibooks
回答2:
- OO Design
- Types of exception safety guarantees (which is what most design patterns/idioms are based on).
- When to use which standard containers
- Boost
回答3:
The first two are 'must know' for a good C++ programmer. 'Good C++ programmers' do not overload operators for fun.
回答4:
Basic:
- RTTI
- Virtual functions
- shared_ptr etc
- Templates
- Virtual inheriting
- Variadic macros
Also useful:
- Attributes (it depends on your compiler)
- Variadic templates
- Variadic functions
- Constexpr (sorting in compile time / calculating hash of strings etc... but the latter is related to the last section)
- Lambdas
Useful for brainfucking or in special cases:
- CRTP
- SFINAE
- inable_if (type traits)
- Foreach macro
- User-defined literals
回答5:
(hardly a must-know, but still useful) Writing domain-specific languages with operator overloading and template metaprogramming (see Boost.Spirit for a nice example) - but this is the kind of thing that makes shooting yourself in the foot easy, too.
回答6:
The way I used to improve my c++ is reading the source code of leveldb. Because leveldb is a product level code. So you can learn the cpp idiom and design pattern from a real product. Let me show you some example
Leveldb use the Pimpl idiom, almost in all of it's head file, such table.h table_build.h write_batch.h. You can learn from the code directly
Leveldb use many OO design pattern, such as build pattern, the table have the table_build class to build the table, the block have the block_build class to build the block
Leveldb also use the Iterator pattern, the iterator make us use leveldb more convenient.
So I think leveldb contain many idiom or design pattern that c++ engineer should know.
来源：https://stackoverflow.com/questions/2345177/basic-c-idioms-techniques