String (System function): Difference between revisions
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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>% | <tr><th>%value</th> | ||
<tr><th>(System)</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> | ||
<td>The class name in parentheses denotes a shared method. String can also be invoked via a System object variable, which may be null.</td></tr> | |||
<tr><th> | <tr><th><var class="nobr">%(System)</var></th> | ||
<td> | <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> | |||
</table> | </table> | ||
==Examples== | ==Examples== | ||
<ol> | |||
<li>The following statement prints the value of the subsystem string called <code>EMERALDS</code>: | |||
<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: | |||
<p class="code">%sharedDoc is object xmlDoc auto new | |||
... | |||
%sharedDoc:[[LoadXml_(XmlDoc/XmlNode_function)|loadXml]](%(system):string('SharedDoc'))</p> | |||
</ol> | |||
==See also== | ==See also== | ||
{{Template:System:String footer}} | {{Template:System:String footer}} | ||
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
- The following statement prints the value of the subsystem string called
EMERALDS:print %(system):string('EMERALDS')
- 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'))