Gavin Wiggins

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This page is a collection of my notes on various programming topics. Subscribe to this page using the JSON Feed with your favorite RSS reader or follow me on Mastodon where I share links to new articles.

⚙️ C++

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Code examples are available on GitHub in the cpp-programs repository.

• Array with two-dimensions
• Clang on macOS
• CMake build
• CMake install
• Command line arguments
• Comments
• Hello world
• Include function
• Numbers
• Resources
• Strings

☕️ JavaScript

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Code examples are available in the javascripts GitHub repository.

• Fizz buzz
• Input number
• Load content from HTML files
• Modules
• Node
• Plotly graph
• Resources
• Scroll columns
• Select results
• Select units
• Strings

🧮 Julia

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Code examples are available in the computing-julia repository on GitHub.

• Arrays
• Comments
• Conditional statements
• Debugging
• Dictionaries
• Docstrings
• Functions
• Getting started
• JSON parsing
• Loops
• Modules
• Operators
• Print
• Strings
• Testing
• Tuples

🐍 Python

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Code examples can be found in the pythonic repository on GitHub.

• Argparse
• Cache function
• Cached class property
• Conda environments
• Count letters
• Counter
• cProfile
• Debugger
• Dictionaries
• Doctest
• Enumerations
• Fizz buzz
• Installing Python
• JSON
• Lists
• Makefiles
• Numbers
• Package name
• Package with data
• Pathlib
• Pre-allocate list
• Protocol
• Secrets
• Sorted list of items
• Strings
• Sublime Text project
• Test examples
• Textwrap dedent
• TOML
• Tuples
• Unittest CSV files
• Version number
• Virtual environments
• XML

Dask and Ray

• Dask arrays
• Ray actors
• Ray functions
• Run Dask code as a script

Flask

• Bokeh graph
• Bokeh graph with Htmx
• Deploy on Heroku
• Form input
• Form input with Htmx
• Plotly graph
• Plotly graph restyle
• Plotly graph with Htmx
• Update page with Ajax

Matplotlib

• Animation
• Bar plot
• Contour plot smoothing
• Imshow plot
• Line plot
• Matshow plot
• Mosaic grid of plots

NumPy and SciPy

• Boolean indexing
• Clip array values
• Compare inv and solve functions
• Full array
• Gauss-Legendre points and weights
• Index of max value
• Large array memory usage
• Loop over columns
• Maximum array
• Save and load arrays
• Set difference of two arrays
• Sparse diagonal matrix

Tkinter

• Basic Tkinter application
• Open JSON file
• Theme customtkinter
• Theme ttkbootstrap
• Update Label text
• View data with Matplotlib

🍎 Swift

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Code examples are available on GitHub in the swift-macos repository.

• Arrays
• Comments
• Compiler optimizations
• Create a package
• Date formatting
• Defaults command line tool
• Dictionaries
• Directory contents
• Discardable result
• Elapsed time
• Element-wise array addition
• Flat indexing an N-dimensional array
• Image from array data
• Image from colormap filter
• Install Xcode
• Normalize array values
• Package a library
• Range
• Read Eval Print Loop (REPL)
• Resources
• Strides
• Strings
• Terminal setup and commands

SwiftUI

• AppStorage
• Async for-in loop
• Blur effect
• Button styles
• Credits
• Cursors
• Display scale
• Grid lines
• Heat map chart
• Image from colormap filter
• Images and symbols
• Label
• LabeledContent
• Line chart
• Menu items
• NSPasteboard
• Open a window
• Path markers
• Picker control
• Preferences window
• ProgressView
• ScrollView
• Sidebar DisclosureGroup
• Sidebar toggle
• Sine wave
• Stepper
• Table
• Text
• TextField
• Three column NavigationView
• Toggle animation
• Toolbar dropdown
• Two column NavigationSplitView
• Two column NavigationView
• View Tap Gesture
• ViewBuilder
• WebView
• Window and toolbar style
• Window default size
• Window resizability

Accelerate

• Absolute value
• Complex multiplication
• Matrix multiplication
• Reverse array elements
• Sort array values

Metal

• Clear color
• Color view with compute kernel
• Matrix multiplication
• Noise
• Particles
• Sampler
• Triangle