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BEGIN
Code, enclosed in {and}, to run before the program runs.
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END
Code enclosed in {and}, to run when the program ends.
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alias
Creates and alias for an existing method, operator, or global variable.
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and
Logical operator; same as && exept and has lowered precedence. Compare with ‘or’
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begin
Begins a code block or group of statements; with ‘end’
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break
Terminates a ‘while’ or ‘until’ loop or a method inside a block.
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case
Compares an expression with a matching ‘when’ clause; closes with ‘end’ see ‘when’
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=
Assigns value to a variable name. ie name = Chad Jemmett
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$
- A global variable.
- When this precedes a word, it means the word is a global variable.
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Modules
- A way of grouping together methods, classes and constants. Modules give you 2 major benefits
- They provide a namespace and prevent name clashes
- The implement the mixin facility.
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Loops
Used to execute the same block of code for a specified number of times.
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