Ruby Tutorial : Types

Forums » Bookshelf » Ruby Tutorial » Types

Types and Conversions

Ref. WGR Chapter 7, Built-in essentials

Built-in Types

Numbers
- 42
Booleans
- true
- false
Strings
- "apple"
- 'banana'
Symbols
- :apple
Arrays
- ["apple", "banana"]
Hashes
- {:apple => 'red', :banana => 'yellow'}
Ranges
- (1..10)

to_x

to_i converts to integer
to_f converts to float
to_s converts to string
to_a converts to array
to_sym converts to symbol

to_s

it's tempting to use to_s in your UI
usually to_s is insufficient and therefore useless
make a custom named method instead for your purposes
- e.g. display_name

`inspect`

inspect produces a debug-ready representation of the object
usually contains lots of information
not to be shown to users, but good in log files or console
a better way to debug: the "d" method
- http://github.com/sconover/wrong

Prev		Next
	Home \| ToC