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Andrew Fletcher
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What to do when you want to filter a Realm object, using NSPredicate in SwiftUI or in Swift.
Applying the filter to a simple condition in one line
let exists = realm.objects(ExampleObj.self).filter(NSPredicate(format: "uid = %ld", uid))Creating a variable predicate that will be injected as a condition
let predicate = NSPredicate(format: "uid = %ld AND nid = %ld",uid,nid)
let exists = realm.objects(ExampleObj.self).filter(predicate)Finally, managing the predicate as an array by...
Andrew Fletcher
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Today while in Terminal, I ran a regular script pod update. However, this...
Andrew Fletcher
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I'm going to take you on a journey about adding a gradient tint to a...
Andrew Fletcher
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Creating a new SwiftUI project is a quick process. There are already...
Andrew Fletcher
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How to apply a gradient tint over a background image?
Set the background...
Andrew Fletcher
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For detailed notes regarding how to add custom fonts to your iOS app see Apple's custom font notes.
When using the font programmatically, remember that the font file name most of the time will not be the font name. For example, I wanted to use SF-Pro-Text-Bold and its font name is SFProText-Bold. If you want to check the font name, add the following script
for family in UIFont.familyNames.sorted() {
let names = UIFont.fontNames(forFamilyName: family)
print("Family:...
Andrew Fletcher
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Working on formatting the date in Xcode, and you come across the situation where...
Andrew Fletcher
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Adding a floating decimal point for n number of places is quite easy to achieve....
Andrew Fletcher
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Adding a pem file to secure ejabbered on the server for chat connection.
Getting...
Andrew Fletcher
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To create a .pem file, is quick once you have your .p12 certificate. I...
Andrew Fletcher
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I had the issue where I needed to filter an array list by a specific column. In my instance, the column is language. To be able to reduce the query to the language column the code required is
levels = selectedCategory?.levels.filter("language = %@", language)Language can be any string, in this instance for me language is a two alpha character such as 'fr', 'en' or 'de'.
Further to this you can continue to chain this query through including sort as per
levels =...
Andrew Fletcher
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A handy resource list of fonts for iOS:
iOS Font List -...
Andrew Fletcher
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During the process of building the app, there are warnings about the code....
Andrew Fletcher
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https://github.com/kylebrowning/waterwheel.swift
After a short amount searching...
Andrew Fletcher
•
Ha you have read it before, one of those throw away lines that is written "just...