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Showing content from https://docs.ruby-lang.org/en/3.0/FalseClass.html below:

class FalseClass - RDoc Documentation

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.

false & obj → false click to toggle source

nil & obj → false

And—Returns false. obj is always evaluated as it is the argument to a method call—there is no short-circuit evaluation in this case.

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

obj === other → true or false click to toggle source

Case Equality – For class Object, effectively the same as calling #==, but typically overridden by descendants to provide meaningful semantics in case statements.

#define case_equal rb_equal

false ^ obj → true or false click to toggle source

nil ^ obj → true or false

Exclusive Or—If obj is nil or false, returns false; otherwise, returns true.

#define false_xor true_and

The string representation of false is “false”.

to_s → "false" click to toggle source

The string representation of false is “false”.

static VALUE
false_to_s(VALUE obj)
{
    return rb_cFalseClass_to_s;
}

false | obj → true or false click to toggle source

nil | obj → true or false

Or—Returns false if obj is nil or false; true otherwise.

#define false_or true_and

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