Changes between Version 3 and Version 4 of ConditionalExpr

ConditionalExpr

v3	v4
12	12	* blank strings and empty collections are true (non nil) - must check .length for strings and .count for collections for checking non empty.
13	13
14		nilable objects (e.g nilable boolean, nilable int) test true if both non nil and non nil object is 'true' (non false or non zero)
	14	nilable types (e.g nilable boolean, nilable int) test true if both non nil and the non nil object is 'true' (non false or non zero)[[BR]]
	15
	16	A nilable Object and nilable String (Object?, String? ) tests true if the instance is non-nil (no subsequent truth test beyond that)
15	17
16	18	== Examples ==
…	…
43	45	else
44	46	print 's is nil'
	47	assert s # succeeds if s is not nil
	48
	49
	50	s1 as String ='...' # non-nilable string with or without (0 length) value
	51	if s.length
	52	print 's not empty'
	53	else
	54	print 's is length 0'
	55	assert s1 # always succeeds - non nilable (warning)
	56	assert s1.length # succeeds if s1 is not empty ( > length 0)
	57
45	58
46	59	l = [] # empty list
…	…
57	70	nb = nil
58	71	assert nb # also fails variable is nil
59
	72
	73	#nilable Object
	74	shouldBeFalse as Object? = false # bool value typed as nilable Anything
	75	assert shouldBeFalse == false # ok
	76	shouldBeTrue0 = not shouldBeFalse # tests against nil only
	77	assert shouldBeTrue0 == true # fails assertion
	78	shouldBeTrue = not (shouldBeFalse to bool)
	79	assert shouldBeTrue == true # ok
60	80	}}}
61	81