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How do you configure an OpenFileDialog to select folders?

... There is the Windows API Code Pack. It's got a lot of shell related stuff, including the CommonOpenFileDialog class (in the Microsoft.WindowsAPICodePack.Dialogs namespace). This is the perfect solution - the usual open dialog with only folders di...
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How to detect the current OS from Gradle

...build scripts. There is though another way to achieve this using Gradle 2+ API, namely: import org.gradle.internal.os.OperatingSystem; task detect { doLast { println(OperatingSystem.current().isMacOsX()) println(OperatingSystem.current().isLinux()) } } Check out the documen...
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What exactly is OAuth (Open Authorization)?

... What exactly is OAuth (Open Authorization)? OAuth allows notifying a resource provider (e.g. Facebook) that the resource owner (e.g. you) grants permission to a third-party (e.g. a Facebook Application) access to their information (e.g. the list of your friends). If you rea...
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What are the options for storing hierarchical data in a relational database? [closed]

...s a result, most people end up having to settle for one or the other especially if there are more than, say, a lousy 100,000 nodes or so. Using the push stack method can take a whole day to do the conversion on what MLM'ers would consider to be a small million node hierarchy. I thought I'd give Ce...
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Difference between android.app.Fragment and android.support.v4.app.Fragment

...lass in the android support library, which is a compatibility package that allows you to use some of the newer features of Android on older versions of Android. android.app.Fragment is the Fragment class in the native version of the Android SDK. It was introduced in Android 3 (API 11). If you want...
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How to sort a list in Scala by two fields?

... @SachinK: You could implement customOrdering as Ordering[Row] manually or using Ordering.by like this: val customOrdering = Ordering.by((r: Row) => (r.lastName, r.firstName))( Ordering.Tuple2(Ordering.String.reverse, Ordering.String) )` – senia Jun ...
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When saving, how can you check if a field has changed?

... A model mixin that tracks model fields' values and provide some useful api to know what fields have been changed. """ def __init__(self, *args, **kwargs): super(ModelDiffMixin, self).__init__(*args, **kwargs) self.__initial = self._dict @property def diff(se...
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Regular expressions in an Objective-C Cocoa application

...ally mixing anything. Most people use a library though, since it offers an API that's easier to use. – Marc Charbonneau Jan 7 '09 at 23:29 5 ...
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Build Eclipse Java Project from Command Line

...ore.aptBuild It uses the jdt apt plugin to build your workspace automatically. This is also known as a 'Headless Build'. Damn hard to figure out. If you're not using a win32 exe, you can try this: java -cp startup.jar -noSplash -data "D:\Source\MyProject\workspace" -application org.eclipse.jdt....
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Get keys from HashMap in Java

...HashMap contains more than one key. You can use keySet() to get the set of all keys. team1.put("foo", 1); team1.put("bar", 2); will store 1 with key "foo" and 2 with key "bar". To iterate over all the keys: for ( String key : team1.keySet() ) { System.out.println( key ); } will print "foo"...