[Ruby笔记]3. 语法检查ruby -cw xx.rb /代码运行 ruby xx.rb/变量约定 @ @@ $

ruby -cw xx.rb

ruby检查代码语法　ruby 后面加个 -cw

PS C:\Users\Administrator\RubyCode> more ex11.rb
# missing "
puts "Hello ,world

PS C:\Users\Administrator\RubyCode> ruby -cw ex11.rb
ex11.rb:2: unterminated string meets end of file

ruby xx.rb

ruby运行代码

PS C:\Users\Administrator\RubyCode> more ex11.rb
# no missing "
puts "Hello ,world "

PS C:\Users\Administrator\RubyCode> ruby ex11.rb
Hello ,world

Variable

各种变量的约定写法举例，akarin~( ‘-^ )-☆

Type	Ruby convention
Local	akaza_akarin
Instance	@akaza_akarin
Class	@@akaza_akarin
Global	$akaza_akarin

Reference

《The Well-Grounded Rubyist, Second Edition》

(https://www.manning.com/books/the-well-grounded-rubyist-second-edition)

1.1.2. The variety of Ruby identifiers

1.1.3. Method calls, messages, and Ruby objects

1.1.4. Writing and saving a simple program

1.1.5. Feeding the program to Ruby

http://www.ioccc.org/2011/akari/akari.c

http://www.csdn.net/article/2012-04-25/2805007

　     ∧_∧
　　　 (･_･ =)
　 ＿φﾉ__⊂)__
／　／三／　／|
||￣￣￣￣~||　|
||￣|￣∪∪||　|
||／　　　 ||／
 http://emoji.vis.ne.jp/benkyo_chu12.htm[/code]