alvin alexander
Nodes for the term “function”
Java: How to square a number
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A Scala 3 function that counts the number of vowels in the String it is given as input
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ScalaTest: How to print debug output in tests (to STDOUT)
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Kotlin sortedWith syntax and lambda examples
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Dart: How to pass a function into a function (using a Function as a method parameter)
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Martin Fowler on lambdas, circa 2004
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Scala if then else syntax (and returning a value from an if statement)
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Using the Scala Option, Some, and None idiom (instead of Java null)
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Scala varargs syntax (and examples)
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Scala: A Reverse Polish Notation (RPN) calculator written with foldLeft
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A Scala method to run any block of code slowly
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Passing a block of code to a function in Scala (callbacks)
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Scala List/Array/Vector/Seq class filter method examples
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Scala method and function examples
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An @impure annotation for functional programming in Scala
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Scala functions to repeat a character n times (blank padding)
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How to define Scala methods that take complex functions as parameters (syntax)
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Scala: “IO monad doesn’t make a function pure; it just makes it obvious it’s impure”
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Kotlin functions to create Lists, Maps, and Sets
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Implicit methods/functions in Scala 2 and 3 (Dotty extension methods)
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My Scala Sed project: More features, returning strings
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Explaining Scala’s `val` function syntax
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How to use partially applied functions in Scala
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Expanding on Adam Warski’s flatMap example (Set, case statements, function literal)
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Scala: What do “effect” and “effectful” mean in functional programming?
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Scala: Passing a function literal as a function argument
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Functional error handling in Scala (video)
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Scala: How to use ‘fold’ on an Option (syntax, examples)
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Scala 3: Functions: Options and Functional Error Handling (Part 1)
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Some Scala Exception ‘allCatch’ examples
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Scala: Using functional programming to improve a method
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A Java method that returns a random boolean value based on a probability
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Functional programming: Math functions, not programming functions
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A guide rope for functional programming (Mary Rose Cook)
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“Pure functional programming is programming with mathematical functions”
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How to define a default value for a method parameter that is a function
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Scala: Standard style of using parentheses when calling procedures
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Scala functions: Named arguments and default arguments
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Flutter: Using the url_launcher’s onLinkTap method (example, syntax)
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My Flutter/Dart string utilities functions
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Flutter/Dart: A few ways to simulate slow-responding functions and methods
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Flutter/Dart: How to use async code inside a non-async method (like initState)
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Dart Map class forEach method examples
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Dart lists: A multiline map method example
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A Dart function to get the current date/time in a “seconds since the epoch” format
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Using a map function on a collection in a Play Framework template
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Scala 3: How to search the Scaladoc with function signatures
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A Dart function to return a random element from a list
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Creating Play Framework template functions (examples)
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How to define a Scala function reference in a Map
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Morpheus teaches functional programming
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An anonymous class example in Scala
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Higher order functions *are* the Haskell experience
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A Scala function to determine whether a number is a prime number
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What is a “context parameter” in Scala 3 (Dotty)?
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Scala for Java devs: Everything in Scala is an object
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How to write a Java method that returns a generic type (syntax)
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Scala: How to add new methods to existing classes
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How to define a Scala method to take an implicit parameter
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Gimp “Script-Fu” example (functions, parameters)
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Simplify, simplify, simplify (programming Scala methods)
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A Scala `for` loop as a method body
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A Scala factorial recursion example
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Perl code to read one line from a text file
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Scala reduceLeft examples (Array, Vector)
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AppleScript subroutines: how to create a subroutine
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Why pure function signatures are more important than impure method signatures
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AppleScript time example: The current time as hours and minutes
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“Many functions in Lisp are list-eaters”
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Fun with Scala functions (andThen and compose)
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A Scala REST “get content” client function using Apache HttpClient
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A JavaScript function to extract text from an anchor tag (using a regex)
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Drupal watchdog function - How to log Drupal errors (error messages)
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Scala FP idiom: Methods should not have side effects
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Drupal 8: How to put a View or Block between the Content and Comments
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AppleScript code to read file contents into a list (array)
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Applying arguments to functions (currying)
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Eliminating parentheses in Haskell with ‘$’
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A Scala function to list subdirectories in a directory
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Sometimes, the elegant implementation is just a function
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How do I make variables private to my Perl function?
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How to access arguments to a Perl subroutine or function
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Perl delete - how to delete a file in a Perl script
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How to use a Scala Set as a function predicate
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Sencha ExtJS - How to properly use the Store load method
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The truth about what Haskell functions return is spooky
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Drupal 8 FAQ: What is the correct custom theme file name (preprocess functions)?
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A Scala port of the Real World Haskell 'myDrop' function
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What does '???' (three question marks) mean in Scala?
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Sometimes the elegant implementation is a function
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Proof in functions
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What makes functional programming easy?
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Scala - Using tuples in an anonymous function
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A Drupal get user id function (uid)
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Source code for an example Android 'send email' function/method
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A Perl trim function
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A PHP char_at function
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CakePHP find conditions (plus find all, find list, and find count)
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A CakePHP multiple layouts solution
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A jQuery insert text example
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PHP date validation
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Apple makes me use a Microsoft keyboard
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Perl substr example - How to extract a substring from a string
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Perl - how to search a list of numbers with the grep function
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Tue, Jul 17, 2007 (Fixed formatting of Function Point Analysis tutorial)
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Perl subroutine values - How to return multiple values from a Perl function
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A perl function that runs a Unix command and returns its exit status
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An apology, and a good laugh
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Ruby - Variable length argument lists with Ruby
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Perl subroutine - how to return multiple values
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Perl subroutines - a Perl subroutine (sub) tutorial
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Design kata regarding Mac OS X Spaces
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A Perl function to prompt users during interactive command-line input
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