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Showing content from https://docs.ruby-lang.org/en/3.4/FalseClass.html below:

class FalseClass - Documentation for Ruby 3.4

The global value false is the only instance of class FalseClass and represents a logically false value in boolean expressions. The class provides operators allowing false to participate correctly in logical expressions.

static VALUE
false_and(VALUE obj, VALUE obj2)
{
    return Qfalse;
}

Returns false:

false & true       
false & Object.new 

Argument object is evaluated:

false & raise 

#define case_equal rb_equal

Returns true or false.

Like Object#==, if object is an instance of Object (and not an instance of one of its many subclasses).

This method is commonly overridden by those subclasses, to provide meaningful semantics in case statements.

#define false_xor true_and

Returns false if object is nil or false, true otherwise:

nil ^ nil        
nil ^ false      
nil ^ Object.new 

#define false_or true_and

Returns false if object is nil or false, true otherwise:

nil | nil        
nil | false      
nil | Object.new 

VALUE
rb_false_to_s(VALUE obj)
{
    return rb_cFalseClass_to_s;
}

The string representation of false is “false”.

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