multiplier
multiplication using peasant tables
Reference - http://mathforum.org/dr.math/faq/faq.peasant.html
Languages
Java, JavaScript ES6(Babel), Rust, Swift3
Approach
- straight forward implementation of the algorithm.
- source and tests in same directory where possible
- Peasant tables is built using a Generator where available, or an Iterator otherwise.
Build
- Uses Bazel for building java/rust
- Uses npm for building javascript
- Uses Swift Package Manager for Swift (on linux w/ docker)
Start
- Get Bazel installed -
brew install bazel - Get NodeJs installed -
brew install node - Run
./go
Miscellaneous
- Swift - under src/swift, you will find start/run scripts which will help to execute Swift code/tests
Learnings
- Bazel is quite fast, incrementally builds only new changes - but quite hard to grasp the project due to scattered build files.
- Java8 streams/lambdas makes the language a decent choice for once (not considering the awesomeness of JVM).
- JavaScript generators and other ES6 sytnax improvements are pretty neat.
- Rust lang concept of borrow/lifetimes are quite neat and warns you of potential mistakes.
- Swift3 error messages are super friendly, even highlighted where classes are renamed between versions.
- Rust/Swift/Java don't have concept of generators, only iterators