Ruby Control Structures Venkat Subramaniam svenkat@cs.uh.edu 1 - - PDF document

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Venkat Subramaniam – svenkat@cs.uh.edu

Ruby Control Structures

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Venkat Subramaniam – svenkat@cs.uh.edu

Statements

• Statements don’t need ;
• You write one statement per line (like

you normally do anyways)

• If you want to put multiple statements on

a line, you may use the optional ;

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Venkat Subramaniam – svenkat@cs.uh.edu

Conditions

• if statement does not need { }
• Short forms

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Venkat Subramaniam – svenkat@cs.uh.edu

Looping

• while loop is similar to what you’re used

to

More concise form

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Venkat Subramaniam – svenkat@cs.uh.edu

For loops

There are some other cool ways as well, but we’ll have to wait for that until we learn about blocks

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Venkat Subramaniam – svenkat@cs.uh.edu

Notice the Range

• We used 1..10 and 1..val
• Range is a first class citizen in Ruby
• You can create range objects
• It comes in handy in various situations…

we’ll see these when discussing collections