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Showing content from https://docs.ruby-lang.org/en/3.1/TrueClass.html below:

class TrueClass - RDoc Documentation

The global value true is the only instance of class TrueClass and represents a logically true value in boolean expressions. The class provides operators allowing true to be used in logical expressions.

true & obj → true or false click to toggle source

And—Returns false if obj is nil or false, true otherwise.

static VALUE
true_and(VALUE obj, VALUE obj2)
{
    return RBOOL(RTEST(obj2));
}

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

true ^ obj → !obj click to toggle source

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

static VALUE
true_xor(VALUE obj, VALUE obj2)
{
    return RTEST(obj2)?Qfalse:Qtrue;
}

inspect()

The string representation of true is “true”.

to_s → "true" click to toggle source

The string representation of true is “true”.

MJIT_FUNC_EXPORTED VALUE
rb_true_to_s(VALUE obj)
{
    return rb_cTrueClass_to_s;
}

true | obj → true click to toggle source

Or—Returns true. As obj is an argument to a method call, it is always evaluated; there is no short-circuit evaluation in this case.

true |  puts("or")
true || puts("logical or")

produces:

or

static VALUE
true_or(VALUE obj, VALUE obj2)
{
    return Qtrue;
}

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