SetGlobal (Subsystem subroutine): Difference between revisions
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{{Template:Subsystem:SetGlobal subtitle}} | {{Template:Subsystem:SetGlobal subtitle}} | ||
The <var>SetGlobal</var> shared subroutine sets a | The <var>SetGlobal</var> shared subroutine sets a [[Subsystem_class#System_and_subsystem_globals_and_strings|subsystem global]]. | ||
==Syntax== | ==Syntax== | ||
{{Template:Subsystem:SetGlobal syntax}} | {{Template:Subsystem:SetGlobal syntax}} | ||
===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th><var>%(Subsystem)</var></th> | <tr><th><var>%(Subsystem)</var></th> | ||
<td>The class name in parentheses denotes a [[Notation conventions for methods#Shared methods|shared]] method. <var>SetGlobal</var> can also be invoked via a <var>Subsystem</var> object variable, which may be <var> | <td>The class name in parentheses denotes a [[Notation conventions for methods#Shared methods|shared]] method. <var>SetGlobal</var> can also be invoked via a <var>Subsystem</var> object variable, which may be <var>Null</var>.</td></tr> | ||
<tr><th>name</th> | <tr><th>name</th> | ||
<td>A string that identifies the global to be set.</td></tr> | <td>A string that identifies the global to be set.</td></tr> | ||
<tr><th>value</th> | <tr><th>value</th> | ||
<td>A string that identifies the new value for the global.</td></tr> | <td>A string that identifies the new value for the global.</td></tr> | ||
| Line 15: | Line 18: | ||
==Usage notes== | ==Usage notes== | ||
<ul><li>All errors result in request cancellation. | <ul> | ||
<li>All errors result in request cancellation. | |||
<li>It is not an error to set a global that is not set. | <li>It is not an error to set a global that is not set. | ||
<li>The <var>Subsystem</var> class <var>SetGlobal</var> sets the global for the current <var>subsystem</var> context (indicated by <var>[[Context_(Subsystem_property)|Context]]</var>). | <li>The <var>Subsystem</var> class <var>SetGlobal</var> sets the global for the current <var>subsystem</var> context (indicated by <var>[[Context_(Subsystem_property)|Context]]</var>). | ||
<li>Like <var>[[$Setg_Subsys]]</var>, <var>SetGlobal</var> momentarily turns off multi-processing, so should not be used heavily in an <var class="product">MP/204</var> environment. <var>[[SetString_(Subsystem_function)|SetString]]</var> does not suffer this limitation and should be used in these situations. | <li>Like <var>[[$Setg_Subsys]]</var>, <var>SetGlobal</var> momentarily turns off multi-processing, so should not be used heavily in an <var class="product">MP/204</var> environment. <var>[[SetString_(Subsystem_function)|SetString]]</var> does not suffer this limitation and should be used in these situations. | ||
</ul> | </ul> | ||
Revision as of 21:31, 16 November 2012
Set a subsystem global (Subsystem class)
The SetGlobal shared subroutine sets a subsystem global.
Syntax
%(Subsystem):SetGlobal( name, value)
Syntax terms
| %(Subsystem) | The class name in parentheses denotes a shared method. SetGlobal can also be invoked via a Subsystem object variable, which may be Null. |
|---|---|
| name | A string that identifies the global to be set. |
| value | A string that identifies the new value for the global. |
Usage notes
- All errors result in request cancellation.
- It is not an error to set a global that is not set.
- The Subsystem class SetGlobal sets the global for the current subsystem context (indicated by Context).
- Like $Setg_Subsys, SetGlobal momentarily turns off multi-processing, so should not be used heavily in an MP/204 environment. SetString does not suffer this limitation and should be used in these situations.
See also
- The setGlobal method, in the Subsystem class, performs a function identical to the $setg_subsys function. That is, the following two statements are identical:
%(subsystem):setGlobal('PHLEGMATIC', 'STOLID') %setg_subsys('PHLEGMATIC', 'STOLID')
- For more information about subsystem globals, see "System and Subsystem globals and strings".