From: Love U Ruby <lists@...>
Date: 2013-03-11T19:37:31+09:00
Subject: Re: Confusion with block local variable declaration with block variable declaration within the pipe

Peter Hickman wrote in post #1101060:


> Again why you assigning to temp and when you immediately overwrite it?

The below also doesn't work.

>> [1,2,3].each {|num;temp =0| print temp}
SyntaxError: (irb):7: syntax error, unexpected '=', expecting '|'
[1,2,3].each {|num;temp =0| print temp}
                         ^
(irb):7: syntax error, unexpected tIDENTIFIER, expecting keyword_do or 
'{' or '(
'
[1,2,3].each {|num;temp =0| print temp}
                                      ^
        from C:/Ruby193/bin/irb:12:in `<main>'

When we write the method block as below, its work.

>> def talk(x,y=1)
>> p "X = #{x}"
>> p "Y = #{y}"
>> end
=> nil
>> talk(5)
"X = 5"
"Y = 1"
=> "Y = 1"
>> talk(5,3)
"X = 5"
"Y = 3"
=> "Y = 3"

The same way I also tried to put the default value to `temp` as

[1,2,3].each {|num;temp =0| temp = num ; print temp}

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