Exploration of allowed mutations in Rip

README.md

Mutations to the currently-initializing object will be allowed in Rip.

Notes

• Methods defined at the class level are typically written as a simple reference assignment.
• @ inside a class refers to the class' prototype property. Properties defined on this object become instance methods.
• @ inside a method refers to the method's receiver. (self refers to the method itself.)

direct_mutations.rip

# library...
Connection = class {
	@.initialize = (adapter, host, port, username, password) -> {
		@.adapter = adapter
		@.host = host
		@.port = port
		@.username = username
		@.password = password
	}
}

# usage...
db = Connection.new(:postgres, "www.example.com", 1234, :root, "")

indirect_mutations.rip

# library...
Connection = class {
	@.initialize = (builder) -> {
		builder(@)
		@.indirect = true
	}
}

# usage...
db = Connection.new((@@) -> {
	@@.adapter = :postgres
	@@.host = "www.example.com"
	@@.port = 1234
	@@.username = :root
	@@.password = ""
})

very_indirect_mutations.rip

# library...
Connection = class {
	@.initialize = (builder) -> {
		builder(@)
	}

	build = (builder) -> {
		@.new((@@) -> {
			builder(@@)
			@@.very_indirect = true
		})
	}
}

# usage...
db = Connection.build((@@) -> {
	@@.adapter = :postgres
	@@.host = "www.example.com"
	@@.port = 1234
	@@.username = :root
	@@.password = ""
})