by Marc Maset
From time to time I discover a new way of coding something that significantly improves readability & minimizes how much I need to code. Here’s one of such latest discoveries. Typically to find a value in an array (or in an array of dictionaries) with a specific condition I would do a for loop with …
Continue reading “Find the right value in an Array, or in an Array of Dictionaries”
If you would like your table to be refreshed “ala Twitter”, with new data being added on top, here’s a quick an easy way to do it for iOS: func updateTableViewAfterAdditionInNewArray(){ //Get new feeds and check if counts are different let countOfAddedItems = oldArray.count – newArray.count …
Continue reading “Inserting cells at the top of a UITableView with no scrolling”
Working with background threads really helps improve the app responsiveness & the overall user experience. But, and it’s a big but, you have to be aware of multithread access conflicts. If you access/modify the same variable from multiple threads you’re prone to non-reproducible -seemingly random- crashes. How to Detect Conflicts? To help you find where …
Continue reading “Multi Thread access to shared Variables – Swift 4 Concurrency”
Swift 4.2 has introduced a native random number API in the standard library, making it cross platform. Int.random(in: 1…1000) // → 691 Double.random(in: 0..<1) // → 0.8741555749903935 UInt32.random(in: 0xD800…0xDFFF) // → 55666 Read more in the great article from Ole Begemann, worth a read. Marc
I wanted a simple function to resize an image to a desired height, while keeping proportions. Here’s what I came up with (based on Marco implementation): extension NSImage { func resizedImageTo(sourceImage: NSImage, newSize: NSSize) -> NSImage?{ if sourceImage.isValid == false { …
Subclass your NSWindow Controller, then in Window Did Load add the following two lines: //Signature Color window?.titlebarAppearsTransparent = true window?.backgroundColor = NSColor.blue That’s it, here’s the result you’ll get: Comments / questions? I’m at @MarcMasVi Marc
You can force the views to keep a inferred min and max width/height by using AutoLayout, but what if you’re working with several views simultaneously? Wouldn’t it be simpler to have a window min and max width/height? Just add the following in your NSWindowController: override func windowDidLoad() { super.windowDidLoad() …
Setting an image to use AspectFill in iOS is trivial, you can set it by code or directly in storyboard. But how do you do it in macOS? In Cocoa/App Kit there is no property for that, you may scale it , but there is no option for AspectFill (or AspectFit for that matter). So, …
Here’s a quick tip on how to open a URL in the background or foreground depending on a user-set preference. if(openInBackgroundPreferenceSet == true){ NSWorkspace.shared.open([linkToOpen], withAppBundleIdentifier: nil, options: NSWorkspace.LaunchOptions.withoutActivation, additionalEventParamDescriptor: nil, launchIdentifiers: nil) }else{ NSWorkspace.shared.open(linkToOpen) } Questions / comments? I’m at @MarcMasVi …
This last couple of months I’ve been hard at work on two new projects, the first of which will be released fairly soon! But, today I wanted to write about something else: CoreData Concurrency. Since the release of Denarius about a year ago I’ve been regularly improving the personal finance app with new features and, …