$ command line ruby cheat sheets
Cheat Sheet Title: [ no_spaces_alphanumeric_only ]
Cheat Sheet:############################################################################## agree( yes_or_no_question, character = nil ) # return boolean ask( question, answer_type = String ) {|question| ...} # string by default choose( *items, &details ) # string list( items, mode = :rows, option = nil ) # string # Other modes available :columns_across , :columns_down and :inline ############################################################################## ## FROM THE HIGHLINE RDOC ## Basic usage: ask("Company? ") { |q| q.default = "none" } Validation: ask("Age? ", Integer) { |q| q.in = 0..105 } ask("Name? (last, first) ") { |q| q.validate = /\A\w+, ?\w+\Z/ } Type conversion for answers: ask("Birthday? ", Date) ask("Interests? (comma sep list) ", lambda { |str| str.split(/,\s*/) }) Reading passwords: ask("Enter your password: ") { |q| q.echo = false } ask("Enter your password: ") { |q| q.echo = "x" } ERb based output (with HighLine’s ANSI color tools): say("This should be <%= color('bold', BOLD) %>!") Menus: choose do |menu| menu.prompt = "Please choose your favorite programming language? " menu.choice(:ruby) { say("Good choice!") } menu.choices(:python, :perl) { say("Not from around here, are you?") } end
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