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Re: Having a problem creating a hash with the map function

by NetWallah (Abbot)
on Nov 29, 2012 at 21:47 UTC ( #1006363=note: print w/replies, xml ) Need Help??


in reply to Having a problem creating a hash with the map function

If you wanted to get fancy and cryptic, you could create your "goal" hash by:
my %Belfast_car_dealer_hash = map{$_=>1} @{$car_city_dealer_aoa[0]} [1..$#{$car_city_dealer_ao +a[0]}];
but I would not write code like that without an explanation:
It uses an array-slice of @{ $car_city_dealer_aoa[0] }, skipping the first (0) element, and mapping the rest.

             "By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest."           -Confucius

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[james28909]: ill be back with a solution eventually
[stevieb]: it's a reminder to re-inforce it :P
[atcroft]: james28909: That particular questions was a bit of trick, actually (depending on the country you are in). More interesting is, if you are trying to subtract from an epoch time, for instance, you might have to consider when/if DST occurs for a location,
[atcroft]: because you may have to adjust the number of seconds you change from an epoch from 86400 (not to mention leap seconds)....
[atcroft]: james28909: Although if your program is using a database, you might be able to "pass the buck" to the database and ask it to do the date change for you....

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