This is by far the most common way to put data into a Hash. This is best suited for small hashes, one-off parameters to methods, or struct-like objects. The most common way to do this is the "rocket" syntax.
#!/usr/bin/env ruby
hash = {
:key => 'value',
:key2 => 'value2'
}
p hash
This is the easiest way to do this in all code up to version 1.9.2. There, a new syntax was introduced. And while this syntax works on 1.9.2, it won't work on earlier versions, so be aware before using it.
#!/usr/bin/env ruby
hash = {
key: 'value',
key2: 'value2'
}
p hash
This is a much cleaner syntax, and reduces the amount of "line noise" (AKA special characters) in your code. However, it makes the assumption that your key is going to be a symbol. If you're using any other objects as your keys (numbers, for example), you can't use this syntax.
