150-DeclareInits.cobra

Timestamp:

03/20/10 04:42:28 (2 years ago)

Author:

Chuck.Esterbrook

Message:

Improvements to the How-To's.

Files:

cobra/trunk/HowTo/150-DeclareInits.cobra

r2127	r2335
8	8
9	9	cue init
10		# ~~code~~
	10	# statements
11	11
12	12	cue init(ARG as TYPE)
13		# ~~code~~
	13	# statements
14	14
15	15	cue init(ARG1 as TYPE1, ARG2 as TYPE2)
16		# code
	16	# statements
	17
	18	Where the first statement is call to another initializer in the same class or
	19	the base class:
17	20
18	21	Some key points:
…	…
20	23	* You can have 0 or more arguments.
21	24
22		* If you declare no initalizers at all for a given class, Cobra will
23		provide one, public, parameterless initializer.
	25	* If you declare no initializers at all, Cobra will automatically provide
	26	them to match each non-private initializer in the base class.
	27
	28	* If you declare even one initializer, Cobra will not automatically add any
	29	more. This gives you control over how a class must be initialized.
24	30
25	31	* Initializers can be overloaded by the number and type of their arguments.
…	…
27	33	* Initializers are public by default.
28	34
29		* Initializers can say "base.init(ARGS)" to invoke a base init.
	35	* Initializers can say "base.init" or "base.init(ARGS)" to invoke
	36	a base initializer.
30	37
31		* Initializers can say ".init" or ".init(ARGS)" to invoke a fellow init.
	38	* Initializers can say ".init" or ".init(ARGS)" to invoke
	39	a fellow initialier.
32	40
33	41	* Initializers can have their own unit tests just like methods.
…	…
94	102	get age from var as int
95	103
	104
	105	class Program
	106
96	107	def main
97	108	pass