Created
February 27, 2009 00:21
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moving an item in an Array to the front while preserving original order for rest of Array
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| class Array | |
| def move_to_front_of_line(x) | |
| return [ self[x] ] | self | |
| end | |
| end |
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| >> people = [ 'Alex', 'Carlos', 'Dawn', 'Chris', 'Robby', 'Gary', 'Allison' ] | |
| => ["Alex", "Carlos", "Dawn", "Chris", "Robby", "Gary", "Allison"] | |
| >> | |
| ?> people.move_to_front_of_line(3) | |
| => ["Chris", "Alex", "Carlos", "Dawn", "Robby", "Gary", "Allison"] | |
| >> | |
| ?> people.move_to_front_of_line(people.index('Allison')) | |
| => ["Allison", "Alex", "Carlos", "Dawn", "Chris", "Robby", "Gary"] |
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