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12 Cards in this Set
- Front
- Back
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Mathematics |
Math *Also contains sub-methods such as sin() and tan() * |
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How to identify the reciever the message. |
dot example: Math.sqrt(9) |
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defining a method |
def example: def hi |
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tell ruby you are done defining a method |
end |
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combining a bunch of methods into one action |
Class (combination of characteristics and functions) |
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Class |
Blueprint from which individual objects are created. |
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Global variables |
a single variable that is available across classes. defined by a dollar sign ($) |
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Class Variables |
available across different objects within a specific class. it is preceded by @@ and followed by the vairable name. |
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Instance Variables |
variables available to all methods of a particular class. these variables change from object to object. preceded by @ sign followed by the variable name. |
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Local Variables |
variables that are defined in a method. not available outside of the defined method, usually begins with a lowercase letter or an underscore. |
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each |
a method that accepts a block of code then runs that block of code for every element in a list. |
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lambda |
a function without a name (anonymous) |
