In a book they showed me this declaration:
他们在一本书中向我展示了这个宣言：
friends = [ { first_name: "Emily", last_name: "Laskin" }, { first_name: "Nick", last_name: "Mauro" }, { first_name: "Mark", last_name: "Maxwell" } ]
This doesn't look like a hash. And when I enter it in IRB i get an error.
这看起来不像哈希。当我在IRB中输入它时，我得到一个错误。
What is this format?
这种格式是什么？
3 个解决方案
#1
5
It's an array of hashes, written in the Ruby 1.9 hash syntax.
它是一个哈希数组，用Ruby 1.9哈希语法编写。
{ first_name: "Emily", last_name: "Laskin" }
is equivalent to:
相当于：
{ :first_name => "Emily", :last_name => "Laskin" }
#2
4
The {key: value} syntax is new in 1.9 and is equivalent to {:key => value}.
{key：value}语法是1.9中的新语法，相当于{：key => value}。
#3
4
It is an array of hashes, only the hashes are 1.9 style hashes.
它是一个哈希数组，只有哈希是1.9样式的哈希。
#1
5
It's an array of hashes, written in the Ruby 1.9 hash syntax.
它是一个哈希数组，用Ruby 1.9哈希语法编写。
{ first_name: "Emily", last_name: "Laskin" }
is equivalent to:
相当于：
{ :first_name => "Emily", :last_name => "Laskin" }
#2
4
The {key: value} syntax is new in 1.9 and is equivalent to {:key => value}.
{key：value}语法是1.9中的新语法，相当于{：key => value}。
#3
4
It is an array of hashes, only the hashes are 1.9 style hashes.
它是一个哈希数组，只有哈希是1.9样式的哈希。