How to list local-variables in Ruby?
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11-10-2019 - |
سؤال
def method
a = 3
b = 4
some_method_that_gives # [a, b]
end
المحلول
It outputs array of symbols, presenting variables. In your case: [:a, :b]
نصائح أخرى
local_variables
lists local variables but it lists them before they are defined. See this:
p local_variables
a = 1
p local_variables
this outputs
[:a]
[:a]
which may not be what you expect. Contrast with defined?
p defined? a
a = 1
p defined? a
which outputs the more anticipated
nil
"local-variable"
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