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Big O, how do you calculate/approximate it?

..., but be warned that this topic takes my students a couple of months to finally grasp. You can find more information on the Chapter 2 of the Data Structures and Algorithms in Java book. There is no mechanical procedure that can be used to get the BigOh. As a "cookbook", to obtain the BigOh from ...
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What does enumerable mean?

...his condition is in place because objects have many more properties, especially from inheritance: console.log(Object.getOwnPropertyNames(Object.prototype)); // ["constructor", "toString", "toLocaleString", "valueOf", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", /* etc. */] Each of t...
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Value Change Listener to JTextField

... Add a listener to the underlying Document, which is automatically created for you. // Listen for changes in the text textField.getDocument().addDocumentListener(new DocumentListener() { public void changedUpdate(DocumentEvent e) { warn(); } public void removeUpdate(DocumentE...
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CSS center text (horizontally and vertically) inside a div block

...al align". Since they tend to be hacks or adding complicated divs... I usually use a table with a single cell to do it... to make it as simple as possible. Update for 2020: Unless you need make it work on earlier browsers such as Internet Explorer 10, you can use flexbox. It is widely supported...
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Convert number to month name in PHP

... The recommended way to do this: Nowadays, you should really be using DateTime objects for any date/time math. This requires you to have a PHP version >= 5.2. As shown in Glavić's answer, you can use the following: $monthNum = 3; $dateObj = DateTime::createFromFormat('!m',...
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Where should I put tags in HTML markup?

...ace to put the <script> tags and included JavaScript? I seem to recall that you are not supposed to place these in the <head> section, but placing at the beginning of the <body> section is bad, too, since the JavaScript will have to be parsed before the page is rendered compl...
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Is there a format code shortcut for Visual Studio?

...s, e.g. I have set Add/remove braces for single-line control statements (really bad description because the user has no idea what happens when you activate it^^) so the formatter always changes if(foo) bar; to if(foo) { bar; }. executing Edit.FormatSelection doesn’t change that. Might be a bug, go...
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Centering controls within a form in .NET (Winforms)? [duplicate]

... Great, I never thought about quit all sides on Anchor property, now if I resize the control keeps centered. !great! – FabianSilva Mar 23 '12 at 13:52 ...
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How to delete .orig files after merge from git repository?

... It's a pain that git clean -df doesn't do it. Why should we have to manually clean up garbage that it leaves behind? – Sridhar Sarnobat Apr 13 '18 at 0:01 ...
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How to add local .jar file dependency to build.gradle file?

... If you really need to take that .jar from a local directory, Add next to your module gradle (Not the app gradle file): repositories { flatDir { dirs 'libs' } } dependencies { implementation name: 'gson-2.2.4' } ...