Apple introduced SwiftUI Charts at WWWDC 2022, which makes it incredibly easy to create charts within SwiftUI views. Charts are a great way of presenting visual data in a rich format that is easy to understand. This article shows how to easily create a line chart with so much less code than was previously used to …

Read More

Data stored in a csv file can often contain JSON objects in one of the fields. The csv data can easily be loaded into a Pandas Dataframe for analysis. Fields of interest in the JSON object can also be extracted into their own column easily using Dataframe.Apply.

Read More

Reduce is a simple way to perform an operation over each element in a collection and condense down to a single value. It is commonly used on a list of numeric values to add up all the values.

Read More

SwiftUI does not have a control to present an open/save dialog to the user to allow saving files to the macOS filesystem. One could build such a view from scratch, but it is easier to use NSSavePanel from AppKit. This article demonstrates how to use NSSavePanel to get the URL for the file to be saved and use …

Read More

Swift provides a number of map methods to transform elements in Swift collections and return the transformed data in a new Array. The transform is supplied in a trailing closure to the map function. This article looks at Map, FlatMap and CompactMap on collections in Swift as well as MapValues in Dictionary.

Read More

A dictionary stores a list of key/value pairs in an unordered structure that is fast and efficient at adding elements and finding elements by a key. Each element in the dictionary is identified using its key, which is a hashable type such as a string or number.

Read More