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What do the plus and minus signs mean in Objective-C next to a method?

...on of this from Apple is here, under the 'Methods and Messaging' section: https://developer.apple.com/library/mac/referencelibrary/GettingStarted/RoadMapOSX/books/WriteObjective-CCode/WriteObjective-CCode/WriteObjective-CCode.html In brief: + means 'class method' (method can be called without an...
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How do you clear a slice in Go?

...nd wanted to share my results. To practice, I did a little go playground: https://play.golang.org/p/9i4gPx3lnY which evals to this: package main import "fmt" type Blah struct { babyKitten int kittenSays *string } func main() { meow := "meow" Blahs := []Blah{} fmt.Printf("Bl...
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How to debug stream().map(…) with lambda expressions?

... for this case as a Java Stream Debugger plugin. You should check it out: https://plugins.jetbrains.com/plugin/9696-java-stream-debugger?platform=hootsuite It extends the IDEA Debugger tool window by adding the Trace Current Stream Chain button, which becomes active when debugger stops inside of a...
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How to programmatically set drawableLeft on Android button?

...In Application class: class MyApplication : Application() { override fun onCreate() { super.onCreate() AppCompatDelegate.setCompatVectorFromResourcesEnabled(true) } } share | ...
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Formatting a float to 2 decimal places

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When does invoking a member function on a null instance result in undefined behavior?

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How to style the parent element when hovering a child element?

... lightgray; } .letter:hover { background: grey; } <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div id="word"> <div class="letter">T</div> <div class="letter">E</div> <div class="letter">S...
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Best practice for instantiating a new Android Fragment

...ity. This approach is also documented in the android developer reference: https://developer.android.com/reference/android/app/Fragment.html share | improve this answer | fol...
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Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])

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How to remove all subviews of a view in Swift?

...eFromSuperview() }) // this returns modified array ^^ These features are fun! let funTimes = ["Awesome","Crazy","WTF"] extension String { func readIt() { print(self) } } funTimes.forEach({ $0.readIt() }) //// END EDIT Just do this: for view in self.view.subviews { view.r...