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| { | |
| " ": " ", | |
| "!": "!", | |
| "\"": """, | |
| "#": "#", | |
| "$": "$", | |
| "%": "%", | |
| "&": "&", | |
| "'": "'", | |
| "(": "(", |
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| class Hash | |
| def keys_to_sym | |
| self.each_with_object({}) do |(k, v), h| | |
| h[k.to_sym] = v.class == Hash ? v.keys_to_sym : v | |
| end | |
| end | |
| end | |
| hash = {"a" => 1, "b" => 2, "c" => {"A" => "foo", "B" => "bar"}} | |
| hash.keys_to_sym |
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| hash = { a: 1, b: 2, c: 3 }; | |
| total = $.map(hash, function(v, k){return v;}).reduce(function(x, y){return x + y;}); | |
| // => 6 |
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| Encounter E437: terminal capability "cm" required | |
| Press ENTER or type command to continue |
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| ary = [ { a: 1, b: 2, c: 3 }, { b: 3, c: 2 }, { a: 2, c: 4 } ] | |
| key = :a | |
| max = ary.select{ |h| h[key] }.map{ |h| h[key] }.max # => 2 | |
| min = ary.select{ |h| h[key] }.map{ |h| h[key] }.min # => 1 |