This book is contained in the Rubyinstaller for windows. It is in the folder of /doc . http://www.sapphiresteel.com/The-Book-Of-Ruby Download this book: http://www.sapphiresteel.com/IMG/zip/book-of-ruby.zip Good Luck!
This is an example from this book. If you feel misunderstanding, you may need to read the book!
Great example!
class MyClass @@classvar = 1000 @instvar = 1000
def MyClass.classMethod if @instvar == nil then @instvar = 10 else @instvar += 10 end
if @@classvar == nil then
@@classvar = 10
else
@@classvar += 10
end
end
def instanceMethod puts "init instance Method" if @instvar == nil then @instvar = 1 else @instvar += 1 end
if @@classvar == nil then @@classvar = 1 else @@classvar += 1 end
end
def showVars return "(instance method) @instvar = #{@instvar}, @@classvar = #{@@classvar}" end
def MyClass.showVars return "(class method) @instvar = #{@instvar}, @@classvar = #{@@classvar}" end
end
puts( MyClass.showVars )
puts( '--------------' )
for i in 0..2 do
ob = MyClass.new
MyClass.classMethod
ob.instanceMethod
puts( MyClass.showVars )
puts( ob.showVars )
end
看这封面就让人想到了《The Linux Command Line》... 楼主发的这个下载链接，下载的文件是 09 年版的，还没有目录，刚在爱问上搜到个 11 年版有目录的，默默把地址贴上： http://ishare.iask.sina.com.cn/f/19980009.html