[c++] Basic ideas and Style Guide

標籤：iterator   eal   mpi   uid   lang   require   for   isa   line   

Get your own compiler: 

sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt-get update
sudo apt-get install g++-4.9
you can then compile using the command:
g++-4.9 -std=c++14 -Wall -Werror -O2 -o helloworld helloworld.cpp

 

 

Style Rules:

Macros should never be required in C++.
Variables should be defined close to their use.
Don’t use malloc/realloc, use new (or smart pointers)
Minimise use of void*, pointer arithmetic, union and c-style casts
Minimise the use of C-style arrays and strings, use vector/array (from C++11) and string instead.

總之，忘掉C語言。

 

C++ Standard Library

For efficiency reasons, STL is not object-oriented:

• Makes little use of inheritance, and
• Makes no use of virtual functions

 

The Standard Template Library (STL) is a part of the C++ standard library, Some others are:

分類一：

• The C standard library
• Language support: <exception>, <ctime>, ...
• Strings: <string>, <cstring>, ...
• Numerics: <cmath>, <complex>, ...
• I/O: <iostream>, <fstream>, <cstdio>, ...
• Exception classes
• Smart pointers
• Classes for internationalisation support

分類二：

Containers: vector, list, stack, ...
Algorithms: find, sort, copy, ...
Iterators are the glue between the two!

 

The compilation process:

1. Preprocessing - handles meta-information (e.g., #include)
2. Compiling - translates C++ into machine code objects
3. Linking - merges objects into a single application

  

Google 開源項目風格指南

對語言風格的實踐就是最好的學習路徑。明白了作者的風格定義思路，也就意味著語言學習達到了優良水準。

路漫漫其修遠兮…… 除了堅持，沒有捷徑。Good luck!

 

 

[c++] Basic ideas and Style Guide