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How big should a UIBarButtonItem image be?

...nd the HIG should definitely be in your bookmarks if you're working on iOS apps!) That would translate to images 25px square for older devices like iPad 2 / Mini, 50px square for most current devices like iPhone 8 or iPad, and 75px square for Retina HD devices (the iPhone 6/7/8 Plus, or iPhone X). ...
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Swift compiler segmentation fault when building

... of if(currentMeal!.State == .Deleted){ } so I think optional not unwrapped in if condition can cause this error share | improve this answer | follow | ...
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Convert xlsx to csv in Linux with command line

... The Gnumeric spreadsheet application comes with a command line utility called ssconvert that can convert between a variety of spreadsheet formats: $ ssconvert Book1.xlsx newfile.csv Using exporter Gnumeric_stf:stf_csv $ cat newfile.csv Foo,Bar,Baz...
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What's the difference between the atomic and nonatomic attributes?

... astronomicalEvents; that lists data I want to display in the UI. When the application launches the pointer points to an empty array, then the app pulls data from the web. When the web request completes (in a different thread) the app builds a new array then atomically sets the property to a new poi...
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How to exclude specific folders or files from validation in Eclipse?

We have a bunch of malformed XML files used in unit tests to check if our application can handle them. 6 Answers ...
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How to display hidden characters by default (ZERO WIDTH SPACE ie. &#8203)

...idn't show them, which was causing problems with parsing config file of my app... I discovered it accidentally in vi. 2 Ans...
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Is embedding background image data into CSS as Base64 good or bad practice?

...mages as data into CSS or HTML templates could be beneficial on mobile web apps. You should measure usage on a case-by-case basis -- I'm not advocating that data URIs should be used everywhere in a mobile web app. Note that mobile browsers have limitations on total size of files that can be cached....
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What are good message queue options for nodejs? [closed]

Looking to use a message queue in a small web app I'm building with node.js. I looked at resque but not sure that's appropriate. The goal is to push notifications to clients based on backend and other client actions with socketio. I could do this with just socketio but I thought maybe a proper messa...
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Take screenshots in the iOS simulator

I want to take a screenshot of my iOS application when it is running in the simulator, and save the screenshot on my Mac. How can I do this? ...
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How do you get current active/default Environment profile programmatically in Spring?

...n't need to implement EnvironmentAware. But I don't know drawbacks of this approach. share | improve this answer | follow | ...