Ruby/String/each byte
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(Различия между версиями)
ViGOur (Обсуждение | вклад) м (1 версия) |
Текущая версия на 17:56, 13 сентября 2010
Append the output to an array
out = [] "myValue".each_byte { |b| p out << b} p out
Convert each decimal to its character equivalent with Integer"s chr method
"myValue".each_byte { |b| print b.chr, "/" }
each_byte block logics
#!/usr/bin/env ruby thoreau = "If a man does not keep pace with his companions, perhaps it is because he hears a different drummer." thoreau.each_byte do |c| print c.chr, "/" end
each_byte takes a string apart byte by byte, returning the decimal value for the character at each index location.
"myValue".each_byte { |b| print b, "/" }
Loop through each byte from a string
hexadecimal = "\x00\x01\x10\x20" hexadecimal.each_byte { |x| puts x }
Use case to deal with special key
def snoop_on_keylog(input) input.each_byte do |b| case b when ?\C-c; puts "Control-C: stopped a process?" when ?\C-z; puts "Control-Z: suspended a process?" when ?\n; puts "Newline." when ?\M-x; puts "Meta-x: using Emacs?" end end end snoop_on_keylog("ls -ltR\003emacsHello\012\370rot13-\012\032")
