Apple WebObjects 3.5 Uživatelský manuál stáhnout pdf (Strana 191)

Working With Strings

191

Note: The conﬁguration of your HTTP server determines the user who owns

autostarted applications.

Reading From Files

The string, array, and dictionary classes provide methods of the form

classNameWithContentsOfFile:. These methods create a new object and initialize it

with the contents of a speciﬁed ﬁle, which can be speciﬁed with a full or

relative pathname.

Working With Strings

NSString and NSMutableString objects represent static and dynamic

character strings, respectively. They may be searched for substrings,

compared with one another, combined into new strings, and so on.

The difference between NSStrings and NSMutableStrings is that you can’t

change an NSString’s contents from its initial character string. While

NSMutableString provides methods such as

appendString: and setString: to add

to or replace the string’s contents, there are no such methods available for

NSStrings. It’s best to use NSStrings wherever possible. Only use an

NSMutableString if you need to modify its contents after you create it.

You can create NSStrings with WebScript’s at sign (@) syntax for deﬁning

constant objects. For example, the following statement creates an NSString

object:

id msg = @"This option is no longer available. Please choose another.";

You can also create string objects with creation methods—methods whose

names are preceded by a + and that return new objects. The strings created

with the @ syntax are always NSStrings, so they can’t be modiﬁed. If you

use a creation method instead, you can choose to create either an NSString

or a NSMutableString. The following code excerpt illustrates the creation

of both NSString and NSMutableString objects:

// Create an immutable string

id message = [NSString stringWithString:@"Hi"];

// Create a mutable string

id message = [NSMutableString stringWithString:@"Hi"];

The methods provided by NSString and NSMutableString are described in

more detail in the next section.

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Desa VDDVF36STN/STP Manuel de l'utilisateur (34 pages)

marque: Desa | Catégorie: Fireplaces | Taille: 1.84 MB |

Table des matières

DIRECT-VENT GAS

FIREPLACE

PRODUCT DIMENSIONS

TABLE OF CONTENTS

GLOSSARY OF TERMS

FIREBOX DIMENSIONS

INTRODUCTION

Before You Begin

PRE-INSTALLATION

PREPARATION

Framing (Cont.)

Location Of Vent Termination

Installation Precautions

Installation Planning

Installation Planning (Cont.)

Continued

VENTING INSTALLATION

Wall Switch Installation

Gas Line Hook-Up

Gas Supply Testing

Installing Log Set

Installing Log Set (Cont.)

Decorative Facing

Burner Removal

Glass Door Panels

OPERATING FIREPLACE

CLEANING AND

MAINTENANCE

Lighting Instructions (Cont.)

To Turn Off Gas to Appliance

Optional Remote Operation

TROUBLESHOOTING

ACCESSORIES

TECHNICAL SERVICE

SERVICE HINTS

WIRING DIAGRAM

REPLACEMENT PARTS

REPLACEMENT PARTS LIST

106918-01B

Required

WARRANTY INFORMATION

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