Changes each lower-case char in self by its upper-case variant

var b = new Buffer
b.append("Hello World!")
b.upper
assert b == "HELLO WORLD!"

Property definitions

core $ Buffer :: upper
	# Changes each lower-case char in `self` by its upper-case variant
	#
	# ~~~
	# var b = new Buffer
	# b.append("Hello World!")
	# b.upper
	# assert b == "HELLO WORLD!"
	# ~~~
	fun upper is abstract
lib/core/text/abstract_text.nit:1609,2--1617,22

core $ FlatBuffer :: upper
	redef fun upper
	do
		if written then reset
		for i in [0 .. _length[ do self[i] = self[i].to_upper
	end
lib/core/text/flat.nit:1152,2--1156,4