Read Update #1 Syntax Error I addressed two problems since last update: A bad error message, and an image loading error. The bad error message was triggered when an unknown symbol […]
Drawing a bitmap in the window (Leaf-SDL #2)
New Game: A quest for graphics (Leaf-SDL #1)
I’ve started a journey to make Leaf more visual. You may have seen some of my videos about complexity, complete with shaky mouse drawn lines. It’s simply not good enough, especially […]
Adding += and friends to Leaf
Yesterday I finished a rather simple Kata from Codewars: the sum of a sequence of numbers. It was straight forward to implement, but I felt like it was missing something. It looked […]
Do we need 3, or just 2 error types?
Error handling is hard, and it’s made harder by a rich error hierarchy. Programs that successfully handle errors tend to have only a couple of generic handlers. Code that catches specific types […]
Sorting a file: A real program in Leaf
Finally, a big step for Leaf: something that could be called an actual program. Over the weekend I finished a program that loads a file, sorts the lines, and writes it to […]
Working with types and named constructors in Leaf
As types are a keystone in Leaf, working with them must be fluid and simple. I recently improved this area by adding named constructors and bare type names. The results are interesting. […]
Porting Leaf from Linux to OSX
I recently ported Leaf from Linux to OSX. I figured it was about time to start making it cross-platform. The goal is to get it compiling useful libraries for iOS and Android […]
Optional Types and Leaf: Removing automatic dereference
Optional values are one of the fundamental extrinsic types in Leaf, as are shared values. Originally optional values were used just like regular values, dereferenced automatically. I was always uncertain of that. […]
Adding the first type expression to Leaf: type_infer
I’ve added the ability to type a variable based on an expression. The type_infer type operator resolves to the type of the provided expression — a useful feature for parametrics. Though not […]
The curse of varargs
Unexpectedly I needed to add support for variable argument functions to Leaf long before I intended to. I just wanted to print out a value, but it turns out that the standard […]
Why more eyes are helpful: time wasted on a simple bug
I spent several hours trying to fix a defect that didn’t exist. I’m working on template methods in Leaf and one of my overloads wasn’t resolving. As it is a new feature […]
Are explicit namespaces required?
I’m working on modules in Leaf, implementing namespace support. The moment I write my first test a feeling of uneasiness sets in. As I stare at the sample code I see a […]
Compiling an overloaded function: the selectable type
How is an overloaded function compiled? It’s not something I truly considered prior to writing Leaf. My first implementation mimicked C++, at least how they appear to behave in C++. It worked, […]
Rejuvenating the ternary conditional with optionals
I previously contemplated elimination of the ternary conditional operator, but now I have a solution that retains and improves it. My biggest concern here is having a single unifying conditional logic. I […]
