Lib/abilities - Revision history

Hzwakenberg at 10:07, 11 September 2018

2018-09-11T10:07:40Z

← Older revision		Revision as of 12:07, 11 September 2018
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	[[Category: Library]]		[[Category: Library]]
	[[Category: Design Pattern]]		[[Category: Design Pattern]]
−	This essential library ~~brings together~~ abstract classes that allow to grant certain ''properties'' to objects.	+	This essential library offers abstract classes that allow you to grant certain ''properties'' to objects.

	== COMPARABLE ==		== COMPARABLE ==

Hzwakenberg: /* HASHABLE */

2014-09-11T20:30:23Z

HASHABLE

← Older revision		Revision as of 22:30, 11 September 2014
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	== HASHABLE ==		== HASHABLE ==
	Define a hash key.		Define a hash key.
−	[[library_class:HASHABLE\|This class]] provides the deferred function <tt>hash_code</tt> and redefines <tt>is_equal</tt> ~~for~~ ~~the~~ ~~implication~~ of equality of the hash keys in the ensure clause.	+	[[library_class:HASHABLE\|This class]] provides the deferred function <tt>hash_code</tt> and redefines <tt>is_equal</tt> to allow testing of implied equality of the hash keys in the ensure clause.

	== OBSERVABLE ==		== OBSERVABLE ==

Hzwakenberg at 21:02, 10 September 2014

2014-09-10T21:02:14Z

← Older revision		Revision as of 23:02, 10 September 2014
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	[[Category: Library]]		[[Category: Library]]
		+	[[Category: Design Pattern]]
	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Hzwakenberg: /* HASHABLE */

2014-09-10T18:43:16Z

HASHABLE

← Older revision		Revision as of 20:43, 10 September 2014
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	== HASHABLE ==		== HASHABLE ==
	Define a hash key.		Define a hash key.
−	[[library_class:HASHABLE\|This class]] ~~fournit~~ la ~~fonction~~ ~~déferrée~~ <tt>hash_code</tt> et ~~force la redéfinition de~~ <tt>is_equal</tt> ~~comme~~ ~~devant~~ ~~impliquer~~ ~~l'égalité~~ ~~des~~ ~~clés~~ de ~~hashage~~.	+	[[library_class:HASHABLE\|This class]] provides the deferred function <tt>hash_code</tt> and redefines <tt>is_equal</tt> for the implication of equality of the hash keys in the ensure clause.

	== OBSERVABLE ==		== OBSERVABLE ==

Hzwakenberg at 10:46, 7 September 2014

2014-09-07T10:46:16Z

← Older revision		Revision as of 12:46, 7 September 2014
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−	[[~~Categorie~~: Library]]	+	[[Category: Library]]
−
	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Hzwakenberg at 10:42, 7 September 2014

2014-09-07T10:42:51Z

← Older revision		Revision as of 12:42, 7 September 2014
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	[[Categorie: Library]]		[[Categorie: Library]]
		+
	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Hzwakenberg at 10:41, 7 September 2014

2014-09-07T10:41:37Z

← Older revision		Revision as of 12:41, 7 September 2014
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		+	[[Categorie: Library]]
	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Hzwakenberg at 19:26, 5 September 2014

2014-09-05T19:26:58Z

← Older revision		Revision as of 21:26, 5 September 2014
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−	[[Category:Smarteiffel]]
−
	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Ramack at 21:11, 4 March 2013

2013-03-04T21:11:05Z

← Older revision		Revision as of 23:11, 4 March 2013
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−	[[Category:~~Book~~]]	+	[[Category:Smarteiffel]]

	This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.		This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

Ramack: 6 revisions: initial import from SamrtEiffel Wiki - The Grand SmartEiffel Book

2013-03-03T21:04:58Z

6 revisions: initial import from SamrtEiffel Wiki - The Grand SmartEiffel Book

New page

[[Category:Book]]

This essential library brings together abstract classes that allow to grant certain ''properties'' to objects.

== COMPARABLE ==
Sort objects by increasing order.
[[library_class:COMPARABLE|This class]] supplies comparison features <tt><</tt>, <tt>></tt>, <tt><=</tt>, <tt>>=</tt> etc. One of them is deferred (<tt><</tt>), the others are built using that one.

Identically, the <tt>is_equal</tt> feature is redefined as being a comparison of two objects where one is neither lower nor greater than the other.

Specifically, this class allows to define numbers (see the [[lib/numeric]] library), to sort collections (see the [[lib/sorting]] library), or to store dictionaries and sets (with AVL trees, see the [[lib/storage]] library).

== DISPOSABLE ==
Memory management.
[[library_class:DISPOSABLE|This class]] supplies the <tt>dispose</tt> feature that is called when the object is freed by the garbage collector.

== HASHABLE ==
Define a hash key.
[[library_class:HASHABLE|This class]] fournit la fonction déferrée <tt>hash_code</tt> et force la redéfinition de <tt>is_equal</tt> comme devant impliquer l'égalité des clés de hashage.

== OBSERVABLE ==
[[library_class:OBSERVABLE|This class]] is used with the [[library_class:OBSERVER|observer]] [[lib/design_patterns|design pattern]]. An instance of this class is in charge of notifying its attached observers each time a modification of the instance happens, by using the <tt>notify</tt> feature.

== STORABLE ==
Serializing objects.
[[library_class:STORABLE|This class]] only allows to mark the kind of the objects storable in a [[library_class:REPOSITORY|repository]] (see the [[lib/storage]] library).

== TRAVERSABLE ==
Look through a set of objects. It is the ''read'' part of a collection (see the [[lib/storage]] library).

It can be used in two different ways: either directly (by using <tt>lower</tt>, <tt>upper</tt> and <tt>item</tt>), either by using an [[library_class:ITERATOR|iterator]].

== VISITABLE ==
[[library_class:VISITABLE|This class]] is used with the [[library_class:VISITOR|visitor]] [[lib/design_patterns|design pattern]]. An instance of this class must implement the <tt>accept</tt> feature.