Index
<<<
, using with heredoc syntax, 31
&
(ampersand), using with variables, 30
%
(percent sign), using in strings, 41
::
(scope resolution operator), using, 172—175, 177
;
(semicolon), use with stored functions, 109
"
(quotation marks), using with classes, 152
A
abstract classes
versus classes, 184
creating, 186
declaring attributes, 188
defining constructors, 188
Heron’s Formula, 188
Abstract Factory pattern versus Factory, 224
abstract methods
creating, 186
declaring attributes, 188
defining constructors, 188
Heron’s Formula, 188
access control
establishing for methods, 165
importance of, 166
indicating in UML, 166
in OOP, 151
protected
level, 165
public
level, 165 ...
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