x = "one two"
y = x.split
hash = {}
y.each do |key, value|
hash[key] = value
end
print hash
The result of this is: one=> nil, two => nil
I want to make "one" - key, and "two" - value, but how to do this?
It may look like this: "one" => "two"
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2 Answers
y is an array, therefore in the block key is the item itself ('one', 'two'), and value is always nil.
You can convert an array to hash using splat operator *
Hash[*y]
Comments
A bit faster way of doing it:
x="one two"
Hash[[x.split]]
If you're looking for a more general solution where x could have more elements, consider something like this:
hash = {}
x="one two three four"
x.split.each_slice(2) do |key, value| # each_slice(n) pulls the next n elements from an array
hash[key] = value
end
hash
Or, if you're really feeling fancy, try using inject:
x="one two three four"
x.split.each_slice(2).inject({}) do |memo, (key, value)|
memo[key] = value
memo
end
1 Comment
Glyoko
Actually @Zhong Zheng's answer is more elegant. My solution's good if for some reason you're set on using each (or each_slice) methods and is perhaps useful for educational purposes, but in the real world
Hash[*y] is cleaner.