String (System function): Difference between revisions

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{{Template:System:String subtitle}}
{{Template:System:String subtitle}}
The <var>String</var> read-only property returns the current value of a [[System class#System and subsystem globals and strings|system-wide string]].
The <var>String</var> <var>[[Classes and Objects#readWrite|readOnly]]</var> property returns the current value of a [[System class#System and subsystem globals and strings|system-wide string]].
 
==Syntax==
==Syntax==
{{Template:System:String syntax}}
{{Template:System:String syntax}}
===Syntax terms===
===Syntax terms===
<table class="syntaxTable">
<table class="syntaxTable">
<tr><th>%value</th><td>This string is set to the current value of the named string, or it is set to null if the named string is not set.</td></tr>
<tr><th>%value</th>
<tr><th><var>%(System)</var></th><td>The class name in parentheses denotes a [[Notation conventions for methods#Shared methods and constructors|shared]] method. <var>String</var> can also be invoked via a <var>System</var> object variable, which may be <var>null</var>.</td></tr>
<td>This string is set to the current value of the named string, or it is set to null if the named string is not set.</td></tr>
 
<tr><th><var class="nobr">%(System)</var></th>
<td>The class name in parentheses denotes a [[Notation conventions for methods#Shared methods|shared]] method. <var>String</var> can also be invoked via a <var>System</var> object variable, which may be <var>null</var>.</td></tr>
 
<tr><th>name</th> <td>A string that identifies the global string to be retrieved.</td></tr>
<tr><th>name</th> <td>A string that identifies the global string to be retrieved.</td></tr>
</table>
</table>


==Examples==
==Examples==
<ol><li>The following statement prints the value of the subsystem string called EMERALDS:
<ol>
<li>The following statement prints the value of the subsystem string called <code>EMERALDS</code>:
<p class="code">print %(system):string('EMERALDS')</p>
<p class="code">print %(system):string('EMERALDS')</p>
<li>A common use of system strings might be to hold a complex shared data-structure in the form of XML. Such a string can be loaded into an <var>[[XmlDoc_API#The_XmlDoc_class|XmlDoc]]</var> object fairly easily:
<li>A common use of system strings might be to hold a complex shared data-structure in the form of XML. Such a string can be loaded into an <var>[[XmlDoc_API#The_XmlDoc_class|XmlDoc]]</var> object fairly easily:
<p class="code">%sharedDoc is object xmlDoc auto new
<p class="code">%sharedDoc is object xmlDoc auto new

Latest revision as of 00:27, 16 February 2014

Get a system-wide string (System class)

The String readOnly property returns the current value of a system-wide string.

Syntax

%value = %(System):String( name)

Syntax terms

%value This string is set to the current value of the named string, or it is set to null if the named string is not set.
%(System) The class name in parentheses denotes a shared method. String can also be invoked via a System object variable, which may be null.
name A string that identifies the global string to be retrieved.

Examples

  1. The following statement prints the value of the subsystem string called EMERALDS:

    print %(system):string('EMERALDS')

  2. A common use of system strings might be to hold a complex shared data-structure in the form of XML. Such a string can be loaded into an XmlDoc object fairly easily:

    %sharedDoc is object xmlDoc auto new ... %sharedDoc:loadXml(%(system):string('SharedDoc'))

See also