Precedence of and/or versus method arguments in ruby -


Here are two tests: 

  if included [1,2,3,4] ? 2 & amp; Amp; Nil.nil? Says: Hello Ends # = & gt;

and 

  if [1,2,3,4] .include? (2) & amp; Amp; Nil.nil? Says: Hello Ends # = & gt; Hello

The above tells me that compared to the law code, & amp; Amp; & Amp; Amp; Amp; & Amp;; is a high priority, so it's logical and 2 & amp; Amp; 

  What is [1,2]?  
, 3,4] .include? 2 and zero Indigo? Says: Hello Ends # = & gt; Hello

So it is telling me that the method argument and ' and ' are the same priorities (or the argument of the method ' and >) Because it contains 2 to include? Before this 'and' processed.

Note: I understand that & amp; Amp; and and have different priorities. The question is not about this, but about it and or or Method.

I can not find this document which confirms this, for example, this method does not exactly mention the arguments: or.

Can anyone explain this behavior? In other words, how does Ruby know how to pass values ​​in the form of arguments for a method versus process operators?

As you have said that and and and < / Code> have different preferences, though the explanation for the following example: 

  if [1,2, 3,4] .include? 2 and zero Indigo? Says: Hello Ends # = & gt; Hello

and have the binding power as you can read here:

It basically tells that 2 more Zero. Zero will be assessed as zero, although it can be seen in this example back as 2: 

  foo =: ​​foo bar = nil a = Foo and bar # = & gt; Zero = # & gt; : Foo a = foo & amp; Amp; Bar # = & gt; Zero = # & gt; Void

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