Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid

Re: Using map to create a hash/bag from an array

by jdporter (Canon)
on Dec 17, 2005 at 14:19 UTC ( #517487=note: print w/replies, xml ) Need Help??

in reply to Using map to create a hash/bag from an array

Semantic quibble: what you are talking about is not a bag, it is a set. A bag is just like a set, except that elements can occur more than once. You can use a hash to represent a bag, but it's a bit more involved. One simple implementation could have a key's value indicate the number of times the key occurs in the bag; but you'd still have to override the hash delete function so that it decrements the count, and only deletes the key when the count goes to zero. Another, more obvious, implementation would be to use an array. Then you'd have to write exists and delete functions. Hiding all this behind TIE would probably make some sense. All that being said, you could just use Set-Bag.

We're building the house of the future together.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://517487]
[LanX]: I'm not a big fan of pure make, apparently the auto generated ones are so complicated to be able to work with all possible makes
[stevieb]: I find the M::S makefiles it generates are quite straight forward, and I usually have to add a few things (github info etc). They're about 15 lines or so give or take.
[Corion]: I don't think the EUMM-generated Makefile is that complicated ;)
[stevieb]: Corion++
[jedikaiti]: RonW++ #I have so much accumulated in my memory that finding the right item at a given moment often fails
[LanX]: corion only > 800 lines
[stevieb]: ahhh you're talking about the actual Makefile, not the PP Makefile.PL
[Corion]: LanX: But most of that is just setup of variables to be used later, like CC , LIB etc.
[LanX]: yes and some builders try to avoid it

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (7)
As of 2017-08-18 21:02 GMT
Find Nodes?
    Voting Booth?
    Who is your favorite scientist and why?

    Results (310 votes). Check out past polls.