snoyberg/camel-case-bench

Benchmarking implementations of camel casing in different languages

Camel case benchmark

A collection of benchmarks for camel casing a large chunk of data. Rules for implementations:

• Read input from stdin
• Write camel cased output to stdout
• Camel casing works one line at a time
• Treat anything besides upper and lower case ASCII letters (a-z) as spaces
• Any letter following a space must be upper cased
• Any space character must be stripped (besides newlines, which are retained)
• First character in a line may or may not be upper cased, implementation defined

Running the benchmarks:

• Install the Rust toolchain
• Run cargo run --release

Running the haskell-based benchmarks

• curl http://www.gutenberg.org/files/2600/2600-0.txt -o war-and-peace.txt
• ./main.hs

camel-case-bench's Issues

The Haskell versions are all different

For hello world as input.

The C version gives:

$ echo 'hello world' | ./camel
helloWorld

The Haskell String version gives:

HelloWorld

The Haskell bytestring-simple version gives:

Hello
World

The chrisdone one matches the C one.

I'm not complaining, but I'm using this simple demo as my "locked down Haskell" strawman project in lieu of other ideas, and noticed a cursory test of all three yielding different results. 😂

I think the String version and the C one are correct, but the bytestring-simple one is buggy.