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Interfaces — What's the point?

...rn creature; } } And our front end would then become: CreatureFactory _factory; void SpawnCreature(creatureType) { ICreature creature = _factory.GetCreature(creatureType); creature.Walk(); } The front end now does not even have to have a reference to the library where Troll and Orc ...
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Cannot change version of project facet Dynamic Web Module to 3.0?

....sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>Servlet 3.0 Web Application</display-name> </web-app> and then just Maven -> Update Project ... ...
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JSTL in JSF2 Facelets… makes sense?

...:forEach items="#{bean.items}" var="item"> <h:outputText id="item_#{item.id}" value="#{item.value}" /> </c:forEach> ...creates during view build time three separate <h:outputText> components in the JSF component tree, roughly represented like this: <h:outputText id="it...
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What exactly does an #if 0 … #endif block do?

...entire thing. And the #if 0s will nest with each other, like so: #if 0 pre_foo(); #if 0 foo(); bar(x, y); /* x must not be NULL */ baz(); #endif quux(); #endif Although of course this can get a bit confusing and become a maintenance headache if not commented properly. ...
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How to determine SSL cert expiration date from a PEM encoded certificate?

... "$pem" done | sort Sample output: 2015-12-16: /etc/ssl/certs/Staat_der_Nederlanden_Root_CA.pem 2016-03-22: /etc/ssl/certs/CA_Disig.pem 2016-08-14: /etc/ssl/certs/EBG_Elektronik_Sertifika_Hizmet_S.pem share ...
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How to pass values between Fragments

...uper.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (findViewById(R.id.container) != null) { if (savedInstanceState != null) { return; } getFragmentManager().beginTransaction() ...
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What should I name a table that maps two tables together? [closed]

...oducts and another category for recipe. for both tables we will have recipe_categories and product_categories, and since we can't just "categories" table name for both tables, in order to prevent the conflict, the junction tables for product and recipe will be "recipe_recipe_categories" and "product...
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How to properly create composite primary keys - MYSQL

...is a gross oversimplification of an intense setup I am working with. table_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 . ...
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How do I check in JavaScript if a value exists at a certain array index?

...his answer: stackoverflow.com/a/39171620/3120446 – dx_over_dt Jul 9 '19 at 20:19  |  show 9 more comments ...
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How to convert an array to object in PHP?

...son Medina pointed out, a really clean solution is to use the built-in json_ functions: $object = json_decode(json_encode($array), FALSE); This also (recursively) converts all of your sub arrays into objects, which you may or may not want. Unfortunately it has a 2-3x performance hit over the loop...