Sprinkles is a Java class file that defines a generic Function interface, and a set of static methods to operate on it.

By writing implementations (either regular or anonymous), one can write Java code in a functional style, by chaining functional operations on sets of data. Currently 4 basic functional operations are supported: map, fold, find, and depth-first map. Additional classes provide functions for common operations against types such as File and String.

Examples

Walk filesystem tree and print files

Applier.map(Applier.map(FileFunctions.GET_FILES_FN, new File(".")), new Applier.Fn<File, File>() {
	
	@Override
	public File apply(File f) {
		System.out.println(f.toString());
		
		return f;
	}
});

Join a List of String as a single String separated by commas

List<String> l = new ArrayList<String>();

for (int i = 0 ; i < 100; ++i)
	l.add("i" + i);

System.out.println(
		Applier.fold(l, new StringFunctions.JoinFn(",")));

API

Refer to Javadocs for current API information.

Download

Binary builds are provided by Cloudbees.

Documentation

Javadoc are generated in the Cloudbees build.

License

Sprinkles is public domain.