RUBY - Motorola Solutions LaunchPad Developer Community

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variablesDefining a variable• a = “Hello World”• Don‟t need to specify the type used, inferred fromcontent• Can redefine at any time in the program• a = 15• Type has now changed as well as content
Strong Dynamic Typing• Strong: all variables always have an explicit type• Dynamic: type for variable can change at any time.person = “Gareth”puts “The object in „person‟ is a #{person.class}”puts “The object has an id of #{person.object_id}”puts “and a value of „#{person}‟”
Page 2 and 3: RUBY - Getting StartedGareth Lewis
Page 4 and 5: RubyLanguage• Dynamic• Object-O
Page 6 and 7: Data TypesNumbersInteger types:Fixn
Page 8 and 9: Operations• + Addition• - Subtr
Page 10 and 11: StringsStrings in Ruby• Strings a
Page 12 and 13: String interpolationrequire „time
Page 14 and 15: Methods
Page 16 and 17: Example 2Definition and calldef dou
Page 20 and 21: ProducesThe object in 'person' is a
Page 22 and 23: How do we fix this?person1 = “Tim
Page 24 and 25: ArrayEasy to create• a = [1,2,3,4
Page 26 and 27: HashKey-Value Store• AKA: HashTab
Page 28 and 29: HashKey-Value Store• AKA: HashTab
Page 30: HashInsertion order. Prior to Ruby
Page 34: Regular Expressions
Page 38 and 39: Conditionals and Loops
Page 40 and 41: elseTest multiple conditions• if
Page 42 and 43: whileSimple while loop• countwhil
Page 44 and 45: forFor exists in Ruby, but is very
Page 46 and 47: forFor exists in Ruby, but is very
Page 48 and 49: eachUse each for iterating• a = [
Page 50 and 51: eachUse each for iterating• a = [
Page 52 and 53: ObjectsObjects• class PersonendIn
Page 54 and 55: ObjectsAttributesHow do we access a
Page 56 and 57: ObjectsAttributesHow do we set thes
Page 58 and 59: IRBInteractive Ruby

RUBY - Motorola Solutions LaunchPad Developer Community

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