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When to use in vs ref vs out

...use the parameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use...
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iOS: Multi-line UILabel in Auto Layout

... Use -setPreferredMaxLayoutWidth on the UILabel and autolayout should handle the rest. [label setPreferredMaxLayoutWidth:200.0]; See the UILabel documentation on preferredMaxLayoutWidth. Update: Only need to set the height constraint in storyboard to Greater than or e...
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Equivalent of “throw” in R

...does one "throw" an error in R? I have a function that takes a data frame and some column names and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it. ...
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How can I take more control in ASP.NET?

...ls. It's easier to work with for your purposes. Just use regular HTML tags and put runat="server" and give them an ID. Then you can access them programmatically and code without a ViewState. The only downside is that you won't have access to many of the "helpful" ASP.NET server controls like GridV...
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How/When does Execute Shell mark a build as failure in Jenkins?

...refer). It will email committers when their fixes fixed the failing build. And more and more. Jenkins archiving the artifacts also makes them available, per build, straight off Jenkins. While not as crucial as the SVN checkout, this is once again an integral part of what makes it Jenkins. Same with ...
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What's the best Django search app? [closed]

I'm building a Django project that needs search functionality, and until there's a django.contrib.search , I have to choose a search app. So, which is the best? By "best" I mean... ...
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Save classifier to disk in scikit-learn

How do I save a trained Naive Bayes classifier to disk and use it to predict data? 6 Answers ...
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How to use @Nullable and @Nonnull annotations more effectively?

I can see that @Nullable and @Nonnull annotations could be helpful in preventing NullPointerException s but they do not propagate very far. ...
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Regex to replace multiple spaces with a single space

... string.replace(/\s\s+/g, ' '); If you really want to cover only spaces (and thus not tabs, newlines, etc), do so: string = string.replace(/ +/g, ' '); share | improve this answer | ...
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Folder structure for a Node.js project

... an application (using a testing framework, see here) NOTE: both /vendor and /support are deprecated since NPM introduced a clean package management. It's recommended to handle all 3rd-party dependencies using NPM and a package.json file When building a rather large application, I recommend the f...