CODEWITHSUNDEEP
rubyarrayseach
Pierre.Sassoulas
Pierre.Sassoulas

Reputation: 4282

Undefined method `each ' for an array

I'm trying to iterate over an array containing various instances of a class for a test case. An array should have an each function according to the RubyDoc:

Like all classes that include the Enumerable module, Array has an each method, which defines what elements should be iterated over and how.

The following code works:

@array = []
(0..20).to_a.each{ |i|
  @array.push(i)
}
@array.each { |i|
    puts i
}

But this one does not:

@violation_array = []
(0..2).to_a.each{ |i|
  @violation_array.push(Violation.new("violation#{i}"))
}
@violation_array.each { |violation|
  puts violation
}

and produces this error:

NoMethodError: undefined method `each ' for #<Array:0x007f3aa232ece8>

The value of @violation_array.inspect just before the each is:

[#<Violation:0x007f71e4965e30 @key="violation0">, #<Violation:0x007f71e4965bb0 @key="violation1">, #<Violation:0x007f71e49657f0 @key="violation2">]

Any idea on why this array lacks the each function?

Edit : I had this problem in multiple settings (python, ruby, markdown). 2 years later I finally understood : I always type space while still holding AltGr from a previous or following character that needs it. That makes an insecable space, see How to disable non-breaking space with altgr+space for a solution).

Upvotes: 3

Views: 10378

Answers (1)

Shadwell
Shadwell

Reputation: 34774

I think the error message may be illuminating. There's a space in the method name so the method that doesn't exist is "each ". Somehow I think you've got some spurious whitespace appearing in your code. There definitely is an "each" method on arrays but not an "each " method.

Upvotes: 5

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