Performant, sleek and elegant.
Swift Foundation contains a lot of useful functions on collection types. In the context of this blog post we are interested in map(_:) and prefix(while:). Map is used for transforming collection elements and prefix(while:) for getting a sequence containing initial elements until the predicate is true. In some cases the predicate used in the prefix(while:) …
Continue reading "Adding prefixMap for expensive operations in Swift"
Signal Path version 2.4 is out. This time it is a smaller release concentrating on optimizing file accesses when playing audio or just scrolling through the file.
In the previous blog post Reading data from a file with DispatchIO I built a small FileReader which enabled reading data from a file for random byte ranges. Signal Path uses a similar file reader but in addition it also caches read data in some interactions where there are a lot of read requests active, for …
Continue reading "Building a memory cache for a file reader in Swift"
Signal Path is an app which works with large files, even in several gigabytes. The app reads ranges from the file and visualizes the data. Signal Path heavily relies on DispatchIO for having efficient access to data in a file. The aim of the blog post is to build a FileReader class which wraps DispatchIO …
Signal Path just got a new feature which was requested by users. Happy to announce that Signal Path 2.3 includes a audio replay feature. Now users can record audio and then replay the recording. Especially useful for people who would like to see spectrums while replaying the recording with sound: for example singers or musical …
Continue reading "Signal Path 2.3 for macOS, iOS and iPadOS"
I was looking at formatters provided by Foundation framework and this time I would like to put some attention on MeasurementFormatter. Like the name says, it is used for creating localized strings of some sort of measurements. Measurements are represented by a generic struct Measurement where the generic UnitType describes the unit represented by it. …
Continue reading "Measurement, Unit, Dimension, and MeasurementFormatter on iOS"
Many apps use Core Data for persistence and also need to import data from a server. Imported items typically have a unique identifier which can be used for identifying them. The count of imported items can be high therefore it is preferred to batch insert the items instead of adding them one by one. Core …
Continue reading "Importing items from network to a Core Data store"
I have been writing a new blog post at least every second week and therefore in 2020 I have published total of 27 blog posts. It is time to take a look back on the 2020 and see which blog posts were the most popular ones. I am just looking at the total count of …
UILabel supports displaying attributed strings with link attributes but what it does not support is allowing to tap on hyperlinks and opening those in Safari. An Alternative way is using an UITextView which does support opening hyperlinks but on the other hand it is a more heavy view component and therefore might not be the …
Just a couple of weeks ago I wrote about resizing images on iOS: Resizing UIImages with aspect fill on iOS. As I am currently building a macOS, iOS, watchOS app I realized that I need a multiplatform image resizer. As this app deals with full size photos then I need to resize those photos for avoiding …
Continue reading "CoreGraphics based image resizer for multiplatform apps in Swift"
