ruby - 是否可以在 ruby​​ 方法中使用散列键作为第一级变量？

Question

我会尽量解释一下自己

# Lets say I have this hash
options = {a: 1, b: 2}

# and here I'm calling the method
some_method(options)

def some_method(options)
  # now instead of using options[:a] I'd like to simply use a.
  options.delete_nesting_and_create_vars
  a + b # :a + :b also good.

谢谢!

Answer 1

是否可以使用 Ruby2 splat 参数:

options = {a: 1, b: 2}

def some_method1(a:, b:)
  a + b
end

或:

def some_method2(**options)
  options[:a] + options[:b]
end


some_method1 **options
#⇒ 3
some_method2 **options
#⇒ 3