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  • Exploring data with Swift TabularData and DataFrame

    May 1, 2022 · 13 min read · tabular data dataframe covid swift  ·
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    Exploring data with Swift TabularData and DataFrame

    TabularData was introduced in iOS 15 and can be used to load data from csv or json format into a DataFrame to explore and manipulate. This is not Python Pandas, but it does provide some basic functionality for exploring data and is fast and efficient. In this article, the data on the deaths from Covid is loaded, …

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  • Use Dependency Injection to Unit Test a ViewModel in Swift

    Apr 17, 2022 · 8 min read · dependency injection di unit test swiftui  ·
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    Use Dependency Injection to Unit Test a ViewModel in Swift

    Dependency Injection is a technique to pass in one or more dependent object to another object. This article will build on the Weather App to pass in the weather service to the weather ViewModel at initialisation. This will allow the use of a mock weather service to test the ViewModel in unit tests without requiring any …

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  • Consistent Swift style in Xcode with SwiftLint

    Mar 27, 2022 · 26 min read · swiftlint style swiftui  ·
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    Consistent Swift style in Xcode with SwiftLint

    Code style can be a controversial topic and lead to some passionate debates between developers. The use of a tool to enforce a set of rules on style can be very helpful to avoid contentious arguments and ensure the code is consistent throughout a project. SwiftLint can easily be incorporated into Xcode projects to flag …

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  • Display loading screen when fetching data in Swift

    Mar 20, 2022 · 7 min read · progressview async await swiftui  ·
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    Display loading screen when fetching data in Swift

    Last week, we retrieved weather data from Open Weather API to demonstrate how to parse JSON data. The weather data is retrieved asynchronously, which may result in a delay before the UI is updated. This article shows how to display a progress view while the data is being fetched, to provide feedback that something is …

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  • Read JSON with codeable in Swift

    Mar 13, 2022 · 9 min read · json JSONDecoder swiftui  ·
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    Read JSON with codeable in Swift

    Reading JSON data from local files and url is now much easier with codeable in Swift 5. This article shows how to load JSON data from a local file as well as from the open weather data api.

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  • Saving a SwiftUI view to Photos

    Mar 6, 2022 · 8 min read · photo shape swiftui  ·
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    Saving a SwiftUI view to Photos

    Many shapes and patterns can be created using Path and Canvas in SwiftUI. It would be great to be able to save these as images in the Photo Library. This is possible using UIKit, by first converting the SwiftUI View to UIImage and then saving this image to Photos.

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Eric Callanan

Lifelong learner, Software Engineering Manager, Passionate, Curious
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Tags

SWIFTUI 69 PYTHON 28 SWIFT 13 PANDAS 12 PATH 12 BAR-CHART 10 MVVM 8 MATPLOTLIB 7 PLOTLY 7 ANIMATION 6 CANVAS 6 CHART 6 COVID-19 5 SHAPE 5
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2D2 3D2 ACTIVITY-RING1 ADDCURVE1 AI1 ALGORITHM1 ANGULARGRADIENT1 ANIMATABLEDATA4 ANIMATION6 AREA-CHART1 ARRAY1 ARRAYSLICE1 ASYNC3 ASYNC-LET1 AWAIT3 AXIS2 BAR-CHART10 BUTTON1 BUTTONSTYLE1 CANCEL1 CANVAS6 CARD1 CHART6 CHATGPT1 CIRCLE1 COLOR1 COMPACTMAP1 CONCAT1 COVID2 COVID-195 CROSS-PRODUCT1 DATAFRAME3 DEPENDENCY-INJECTION1 DI1 DICTIONARY1 DIVISION1 DOT-PRODUCT1 ENUMERATE1 FIBONACCI1 FILE1 FILTER1 FLATMAP1 FLIP1 FLOOR1 FOREACH1 FORM1 GEOMETRYREADER1 GEOPANDAS1 GEOPLOT1 HSTACK1 ILOC1 IMAGE2 INDEX1 IPYWIDGETS1 ITERATE1 JSON2 JSONDECODER1 LINE-CHART4 LIST1 LOC1 LOOP1 MACOS1 MAP1 MAPVALUES1 MATHPLOTLIB4 MATPLOTLIB7 MATTHEW1 MINIMAX3 MODAL1 MONTY-HALL3 MVVM8 NAVIGATION2 NAVIGATIONSPLITVIEW1 NSSAVEPANEL1 PALETTE1 PANDAS12 PATH12 PERFORMANCE2 PHOTO1 PIE-CHART1 PLOTLY7 POLYGON1 PREFIX1 PROBABILITY3 PROGRESS1 PROGRESSVIEW1 PUZZLE1 PYTHON28 QR-CODE1 RECURSION1 REDUCE1 ROMAN-NUMERALS1 SCROLL1 SHADING1 SHAPE5 SLIDER2 SPEED1 STAR3 STYLE1 SWIFT13 SWIFTLINT1 SWIFTUI69 TABULAR-DATA1 TABVIEW1 TASK3 TDD4 TEXT2 TIC-TAC-TOE5 TIMELINEVIEW4 TIMING1 UI-TESTING1 UNIT-TEST1 UNIT-TESTING1 USERDEFAULTS1 VECTOR4 VECTORARITHMETIC4 VSTACK1 WHEEL1 WHERE1 ZIP1 ZSTACK1
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