Validate function arguments

[TGOlson]

More or less a simple contract system. AKA, make validators work on arrays.

var validatedFunction = V.validateArgs([isString, isNumber], function(str, n) {
  // ...
})

[TGOlson]

Works: need to test and prettify errors.

var validateArgs = R.curry(function(schema, f) {
  return function() {
    return f.apply(null, V.validateOrThrow(schema, arguments));
  };
});