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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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What is the maximum length of a URL in different browsers?

...ty of Internet users. (Note: this is a quote from an article written in 2006, but in 2015 IE's declining usage means that longer URLs do work for the majority. However, IE still has the limitation...) Internet Explorer's limitations... IE8's maximum URL length is 2083 chars, and it seems IE9 has a ...
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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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How to use a variable for the database name in T-SQL?

... | edited Apr 6 '15 at 10:06 Jeremy Thompson 49.5k1919 gold badges141141 silver badges245245 bronze badges ...
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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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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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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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Format numbers to strings in Python

... | edited May 7 '19 at 13:06 answered Aug 22 '08 at 15:12 K...