Aki springaki

## file0.txt
$ git annotate <ファイル名>

## .powenv
export RUBY_DEBUG_PORT=1234
export POW_WORKERS=1

## Count words.
"no ruby, no life!"
# => {"no"=>2,"ruby"=>1,"life"=>1}

str = "no ruby, no life!"

# A.1
str.scan(/\w+/).each_with_object(Hash.new(0)){|e,h| h[e]+=1}
# => {"no"=>2, "ruby"=>1, "life"=>1}

# A.2
	"no ruby, no life!"
	# => {"no"=>2,"ruby"=>1,"life"=>1}

	str = "no ruby, no life!"

	# A.1
	str.scan(/\w+/).each_with_object(Hash.new(0)){\|e,h\| h[e]+=1}
	# => {"no"=>2, "ruby"=>1, "life"=>1}

	# A.2