Re: using if-elsif-else

BTW, if the theme of the example code is hash value access, you would not use the if-elsif-else clause in that manner, which could be, imho, confusing for beginners - it is not using hash in the most typical way. I think then following pice of code is slightly better for demonstration:

...
chomp ($name);
if (exists $phnums{$name}) {
  print $phnums{$name};
} else {
  print "Name $name does not exists in the hash.";
}
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Comment on Re: using if-elsif-else Download Code

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Re^2: using if-elsif-else by chargrill (Parson) on Dec 29, 2006 at 04:43 UTC
I was operating under the assumption that a user could enter "`Kevin Johnson`" and still get the value for `$phnums{'kevin'}` - i.e. more than what might be used as the explicit hash key. Possibly a poor assumption, but I couldn't think of a better reason for using regexen in the OP's code :-) I recently ran across a hash setup as a dispatch table where most values were well defined, but some could match a variety - these were handled (in a generalized manner) like so: `if( exists $hash{$key} ){ &$hash{$key}; } elsif( $key =~ /phrase/ ){ # several could match but all required the same action &$hash{'some_action'}; } else { &$hash{'default_action'}; }` [download] --chargrill `s*lil; $=join'',sort split q; s;.;grr; &&s+(.(.)).+$2$1+; $; = qq-$_-;s,.,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$,$/)` [download]	[reply] [d/l] [select]
Re^3: using if-elsif-else by thevoid (Scribe) on Dec 29, 2006 at 10:39 UTC
I was operating under the assumption that a user could enter "Kevin Johnson" and still get the value for $phnums{'kevin'} - i.e. more than what might be used as the explicit hash key. You're right, that was the idea :-) Thanks for the alternative code.	[reply]
Re^2: using if-elsif-else by thevoid (Scribe) on Dec 28, 2006 at 16:07 UTC
Ah, nice one. I hadn't really covered exists yet but had seen it mentioned, that makes sense.	[reply]