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I have a a hash
foo = {'bar'=>'baz'} I would like to call foo.bar #=> 'baz'
My motivation is rewriting an activerecord query into a raw sql query (using Model#find_by_sql). This returns a hash with the SELECT clause values as keys. However, my existing code relies on object.method dot notation. I'd like to do minimal code rewrite. Thanks.
Edit: it appears Lua has this feature:
point = { x = 10, y = 20 } -- Create new table print(point["x"]) -- Prints 10 print(point.x) -- Has exactly the same meaning as line above 
203
This is a pretty neat snippet of Ruby that I found to rename a key in a Ruby hash. The #delete method on a hash will return the value of the key provided while removing the item from the hash. The resulting hash gets a new key assigned to the old key's value.
A Hash is a dictionary-like collection of unique keys and their values. Also called associative arrays, they are similar to Arrays, but where an Array uses integers as its index, a Hash allows you to use any object type. Hashes enumerate their values in the order that the corresponding keys were inserted.
Ruby hash creation. A hash can be created in two basic ways: with the new keyword or with the hash literal. The first script creates a hash and adds two key-value pairs into the hash object. A hash object is created.
Simply pressing alt and 3 at the same time will insert a # hash symbol into your text in any application. This shortcut will work with all versions of Mac OS X whether you have a Macbook, Air or an iMac. In most cases Apple has decided to replace this key with a symbol of the local currency.
>> require 'ostruct' => [] >> foo = {'bar'=>'baz'} => {"bar"=>"baz"} >> foo_obj = OpenStruct.new foo => #<OpenStruct bar="baz"> >> foo_obj.bar => "baz" >> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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