David Anderson
Posts: 26
Nickname: tfhma
Registered: Oct, 2005
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David Anderson is a software generalist in Cincinnati doing Ruby and Rails in the agile style.
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A little Hash goodness
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Posted: Sep 8, 2009 9:15 AM
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This post originated from an RSS feed registered with Ruby Buzz
by David Anderson.
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Original Post: A little Hash goodness
Feed Title: def..end
Feed URL: http://feeds.feedburner.com/Defend
Feed Description: Ruby, Rails, and a smattering of other cruft from the back of Dave's mind.
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Some quick refactoring this weekend had me throwing together some tidbits.module Enumerable # return Hash of enumeration to yielded values def collect_hash hash={} inject(hash) {|h,e| h[e] = block_given? ? yield(e) : nil; h } end # return Hash of enumeration to non-nil yielded values def select_hash hash={}, &block collect_hash(hash,&block).compact endendclass Hash # return Hash with
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