puts (0..127).map(&:chr).join
# ↓ the exclamation mark is returned by 33.chr
# [omit some mysterious characters] !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~
# ↑ the quote mark is returned by 34.chr
# and so on...
puts (0..127).map(&:chr).join
# ↓ the exclamation mark is returned by 33.chr
# [omit some mysterious characters] !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~
# ↑ the quote mark is returned by 34.chr
# and so on...