在Ruby中，可以显式创建局部变量 [英] In Ruby is it possible to create a local variable explicitly

问题描述

例如

x = 123
p = Proc.new {
  x = 'I do not want change the value of the outer x, I want to create a local x'
}

在Ruby中，Perl中有与"my"关键字相同的内容吗?

In Ruby Is there something the same as "my" keyword in Perl ?

推荐答案

根据Perl 文档"rel =" nofollow> 我 ，我认为您正在Ruby中寻找以下内容:-

As per the Perl documentation of my,I think you are looking for something like below in Ruby:-

x = 123 
p = Proc.new {|;x|  
  x = 'I do not want change the value of the outer x, I want to create a local x'
}
p.call 
# => "I do not want change the value of the outer x, I want to create a local x"
x # => 123

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