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Why do people say that Ruby is slow? [closed]

... Ruby to be slow but then again, I'm just using it to make simple CRUD apps and company blogs. What sort of projects would I need to be doing before I find Ruby becoming slow? Or is this slowness just something that affects all programming languages? Ruby probably wouldn't serve you ...
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I can’t find the Android keytool

I am trying to follow the Android mapping tutorial and got to this part where I had to get an API key . 10 Answers ...
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How do I avoid capturing self in blocks when implementing an API?

I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
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ImageView - have height match width?

...id:layout_width="wrap_content" android:layout_height="0dp" app:layout_constraintDimensionRatio="1:1" /> </android.support.constraint.ConstraintLayout> See here Deprecated: According to this post by Android Developers, all you need to do now is to wrap whatever you want ...
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How to write log to file

...r me: f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666) if err != nil { log.Fatalf("error opening file: %v", err) } defer f.Close() log.SetOutput(f) log.Println("This is a test log entry") Based on the Go docs, os.Open() can't work for log.SetOutput, because i...
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Remove Application Insight from application on Visual Studio 2013

On Visual Studio I added application insight to a project which creates a ApplicationInsights.config and not sure what other files were added to the project. ...
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Pagination in a REST web application

...ept of page changes with the context; one user of your API may be a mobile app, that can consume only 2 products per page, while the other is a machine app that can consume the whole damn list. In short, page is a "representation" of the underlying domain entity (product) and should not be included ...
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Why Choose Struct Over Class?

...ying is way safer than having multiple references to the same instance as happens with classes. This is especially important when passing around a variable to many classes and/or in a multithreaded environment. If you can always send a copy of your variable to other places, you never have to worry a...
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How to enumerate an enum with String type?

... @DmitryPetukhov I'd be happy to help, but: (1) are you sure you got the latest version of the code? (some crash was fixed a month ago) and (2) please give an MCVE of your custom type that can reproduce a crash, and your version of Xcode. ...
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Android file chooser [closed]

...nager? If I cannot , is there a better way to include a file manager in my app? Thx 2 Answers ...