0
假設我有:如何在Ruby中打印所有方法參數?
def foo(bar, baz) puts "Called foo, bar = #{bar}, baz = #{baz}" blah_blah end
我能爲一個編輯宏是這樣做的:
def foo(bar, baz) puts "<the answer to this question>" blah_blah end
,並得到同樣的調試結果?
假設我有:如何在Ruby中打印所有方法參數?
def foo(bar, baz) puts "Called foo, bar = #{bar}, baz = #{baz}" blah_blah end
我能爲一個編輯宏是這樣做的:
def foo(bar, baz) puts "<the answer to this question>" blah_blah end
,並得到同樣的調試結果?
有一種方法裏面的一些元信息提供:
def foo(bar, baz=2)
p __method__ #=> : foo
p method(__method__).parameters # => [[:req, :bar], [:opt, :baz]]
end
foo(1, 2)
def foo(a: "bar",b:)
p method(__method__).parameters # => [[:keyreq, :b], [:key, :a]]
end
foo(a: 1,b: 2)