Functions and Methods

← All categories

• Q596: What is the difference between a function and a method in EK9?
• Q597: How do function parameters work in EK9?
• Q598: Why doesn't EK9 have default parameter values?
• Q599: Why doesn't EK9 have variable arguments (varargs)?
• Q600: How does method overloading work compared to function dispatching?
• Q601: How do dynamic functions replace nested functions in EK9?
• Q848: Can I assign an abstract function as a delegate in EK9?
• Q873: How do I write a pure function in EK9 that takes parameters and returns a result?
• Q942: How do I pass a function as a parameter in EK9?
• Q997: How do I write a function that returns a value in EK9?
• Q998: Show me different function signatures in EK9 — no params, one param, multiple params, with return.
• Q999: Write an EK9 function that takes a list of integers and returns the sum of all positive values.
• Q1001: How does a function return a value in EK9? There is no return keyword.
• Q1061: Write a reusable function that filters items above a threshold so I can call it from anywhere.
• Q1062: I need a simple one-off function to transform items in a stream pipeline.
• Q1063: Write a complete EK9 program that reads a list of scores, filters passing ones, and prints the results.
• Q1065: Write an EK9 class with comparison operators so I can sort a list of them.
• Q1072: Why does my abstract function get E08180 on the return value?
• Q1167: Write a function that returns a set or unset String depending on input.
• Q1168: Write a pure validation function that checks if an age is between 0 and 150.
• Q1169: Apply two transformations in sequence: double a number then add ten.
• Q1252: Write me an open logWriter function and a dynamic function instance that overrides its behaviour, demonstrating that 'as open' on a function allows dynamic instances to extend it.
• Q1253: Create me an abstract transformer function that a dynamic function instance can extend — showing that 'as abstract' on a function makes it implicitly open.
• Q1269: Write a higher-order function that takes a predicate and counts matching items in a list.
• Q1319: Why does EK9 reject an operator that takes a parameter but has no return declaration?
• Q1343: Why does EK9 reject a named argument whose name does not match the parameter?