Re: What is happening ?

[tilly]

in reply to problem using foreach and each with hash ref

You are assigning a single key/value pair to $key and $value, then making a list of 2 elements out of that list, then iterating over that list of 2 elements.

The next time you call each you'll get the next pair out of the hash.

The usual way to do what you likely want is:

foreach my $key (keys %$hash_ref) {
    my $value = $hash_ref->{$key};
    ...
}

[vinoth.ree]

The next time you call each you'll get the next pair out of the hash.

I get printed only, what the each returns and foreach get ends.

Update:
Title updated

[goeb]

You most likely want to use something like this:

while (($key, $value) = each %$hash_ref) {
    # do something...
}

An example like this is also mentioned in the documentation for each. tilly already explained the reason your loop ends after the first key and value.

[vinoth.ree]

Is it possible to get each pair of key and value in foreach with each function ?

[tilly]

Yes, executing that loop only called each once. But if after that loop you put a second loop that calls each, then that second loop will get a second pair out of the hash. Or if you try to iterate through with a while/each loop, you'll get every pair except the one already consumed in the for loop.

In other words the hash has been left in a potentially bad state.

[vinoth.ree]

OK thanks!