Hello everyone,

I have a little problem while trying to generate a hashtable with a map : I have something like 
my %hash = map {
     (split /:/, $_ )[0] => (split /:/, $_ )[2]
    } <FILE>;

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to generate my hashtable.
The problem is, when I want to display the keys of my hashtable :
print join ( "\n", sort keys %hash );

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I only get the values : the keys are the result of 
(split /:/, $_ )[2]

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instead of the result of 
(split /:/, $_ )[0]

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If I try to display the values with these keys, I get the "real" keys ...

It's as if the keys were the values, and the values were the keys, and I have no idea why.

I thought for some time that $_ may be modified, either by the map, or by the split, but it doesn't seem to be the case.

I also thought that the map function may misunderstand the use of =>, thinking it could be seen as a comparison operator, or something.

I'm asking this question by curiosity, since I won't be generating my hashtable with the two splits, but I thought it was weird for this bit of code not to work.

I hope my question was clear enough, thanks for your answers :)

Tomtom

In reply to Problem generating a hashtable by Tomtom

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