Class Swift_Preferences

Changes some global preference settings in Swift Mailer.

Package: Swift
Author: Chris Corbyn
Located at wa-system/vendors/swift/classes/Swift/Preferences.php

Methods summary
`private`	# `__construct( )` Constructor not to be used Constructor not to be used
`public static Swift_Preferences`	# `getInstance( )` Gets the instance of Preferences. Gets the instance of Preferences. Returns `Swift_Preferences`
`public Swift_Preferences`	# `setCharset( string $charset )` Set the default charset used. Set the default charset used. Parameters `$charset` `string` $charset Returns `Swift_Preferences`
`public Swift_Preferences`	# `setTempDir( string $dir )` Set the directory where temporary files can be saved. Set the directory where temporary files can be saved. Parameters `$dir` `string` $dir Returns `Swift_Preferences`
`public Swift_Preferences`	# `setCacheType( string $type )` Set the type of cache to use (i.e. "disk" or "array"). Set the type of cache to use (i.e. "disk" or "array"). Parameters `$type` `string` $type Returns `Swift_Preferences`
`public Swift_Preferences`	# `setQPDotEscape( boolean $dotEscape )` Set the QuotedPrintable dot escaper preference. Set the QuotedPrintable dot escaper preference. Parameters `$dotEscape` `boolean` $dotEscape Returns `Swift_Preferences`

Properties summary
`private static mixed`	`$_instance`	`null`	# Singleton instance Singleton instance