howl.Globals
callable <foo> returns true if foo can be invoked as a function
assert.is_true callable -> true t = setmetatable {}, __call: -> true assert.is_true callable t
typeof(v) is like type(), but handles regexes and moonscript classes
assert.equal 'regex', typeof r'foo' class Bar assert.equal 'Bar', typeof Bar!
r is a short alias for regex
assert.equal r, require 'howl.regex'