INDEX

A

\A anchors, 218–220

Abbrev modules, 196

absolute paths

files or directories via, 288–289

requiring files and, 204–205

abstract methods, 175

access. See also validation

controlling in inheritance, 180–185

to directory contents, 291–293

to documentation, 1, 9–11

accessors, 141–143

Action Pack objects, 356–357

ActiveRecord

column types in, 364

models, customizing, 366–371

in Ruby on Rails generally, 356

add_record method, 309

agree method, 278

aliases, 112

alternation, 215–217

ancestors method, 406

anchors, 218–220

Apple’s Xcode application, 4

ArgumentError, 246, 251–254

arguments

command-line, 66

default values, 121–122

errors in, 246, 251–254

methods taking, 118–120

parameters as, 118

variable-length, 125–128

arrays, 59–73

adding elements ...

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