cin vs getline vs cin.getline

Case with '\n'

cin

drop all `'\n'` except last one (just leave it in the buffer,won't get it and will finally drop it).

getline

read until `'\n'` and replace `'\n'` with `'\0'`.

cin.getline

same with getline, replace `'\n'` with `'\0'`.

but …

Git saves your system config in /etc/gitconfig , user config in ~/.gitconfig or ~/.config/git/config and repository config in .git/config

Each config will override the previous one so the repository config will override the other config

Config your username and email:

$ git config --global user.name "fx-moon"
$ git …

Basic Powershell

Variable

$<name>=<value>

$usrname='John'
$len=32

$null -> null value

$true -> boolean true

$false -> boolean false

$_ -> the variable currently being processed

Data Structure

Array

$var=@(<element>,<element>,...)
$var[0]
$var[100]=2333

Hash Table

$var=@{<key>=<value>,...}
$var[<key>]
$var.key

Process Control

Branch

if()
{
    ...
}
elseif()
{
    ...
}
else …

Introduction

The Boost.Core library is a collection of core utilities. The criteria for inclusion is that the utility component be:

• simple
• used by other Boost librarys, and
• not dependent on any other Boost modules except Core itself, Config, Assert, Static Assert, or Predef.

addressof

Overview

The header <boost/core …

1 Get boost

just find a copy on https://www.boost.org

2 The boost distribution

boost_1_67_0\ .................The “boost root directory”
   index.htm .........A copy of www.boost.org starts here
   boost\ .........................All Boost Header files
   lib\ .....................precompiled library binaries
   libs\ ............Tests, .cpps, docs, etc., by library
     index.html ........Library …

try pelican

I just forget the usage again and again,so I decided to WcRoIpTyE it=.=

getting start

installing

Pelican currently runs best on Python 2.7.x and 3.3+; earlier versions of Python are not supported.

You can install Pelican via several different methods. The simplest is via …

git learning note

git init

This creates a new subdirectory named .git that contains all of your necessary repository files — a Git repository skeleton. At this point, nothing in your project is tracked yet.

git add

If you want to start version-controlling existing files (as opposed to an empty directory …