SetGlobal (System subroutine): Difference between revisions
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{{Template:System:SetGlobal subtitle}} | {{Template:System:SetGlobal subtitle}} | ||
The <var>SetGlobal</var> shared subroutine sets a [[System class#System and subsystem globals and strings|system-wide global]]. | |||
==Syntax== | ==Syntax== | ||
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===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>(System)</th> | <tr><th><var class="nobr">%(System)</var></th> | ||
<td>The class name in parentheses denotes a shared method. SetGlobal can also be invoked via a System object variable, which may be | <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>System</var> object variable, which may be <var>Null</var>.</td></tr> | ||
<tr><th> | <tr><th>name</th> | ||
<td> | <td>A string that identifies the global to be set.</td></tr> | ||
<tr><th> | <tr><th>value</th> | ||
<td> | <td>A string that identifies the new value for the global.</td></tr> | ||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
<ul> | |||
<li>All errors result in request cancellation. | |||
<li>It is not an error to set a global that is not set. | |||
<li>Like <var>[[$Setg_Sys]]</var>, the <var>SetGlobal</var> method momentarily turns off multi-processing, so should not be used heavily in an <var class="product">MP/204</var> environment. <var>[[SetString_(System_function)|SetString]]</var> does not suffer this limitation and should be used in these situations. | |||
</ul> | |||
==Examples== | ==Examples== | ||
The following statement sets the system global called <code>CHOLERIC</code>: | |||
<p class="code">%(system):setGlobal('CHOLERIC', 'ANGRY')</p> | |||
==See also== | ==See also== | ||
<ul> | |||
<li>The <var>setGlobal</var> method, in the <var>System</var> class, performs a function identical to the <var>[[$Setg_Sys|$setg_sys]]</var> function. That is, the following two statements are identical: | |||
<p class="code">%(system):setGlobal('PHLEGMATIC', 'STOLID') | |||
%rc = $setg_sys('PHLEGMATIC', 'STOLID')</p> | |||
<li>For more information about system globals, see [[System_class#System_and_subsystem_globals_and_strings|"System and SubSystem globals and strings"]]. | |||
</ul> | |||
{{Template:System:SetGlobal footer}} | {{Template:System:SetGlobal footer}} | ||
Latest revision as of 22:06, 12 December 2014
Set a system-wide global (System class)
The SetGlobal shared subroutine sets a system-wide global.
Syntax
%(System):SetGlobal( name, value)
Syntax terms
| %(System) | The class name in parentheses denotes a shared method. SetGlobal can also be invoked via a System 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.
- Like $Setg_Sys, the SetGlobal method 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.
Examples
The following statement sets the system global called CHOLERIC:
%(system):setGlobal('CHOLERIC', 'ANGRY')
See also
- The setGlobal method, in the System class, performs a function identical to the $setg_sys function. That is, the following two statements are identical:
%(system):setGlobal('PHLEGMATIC', 'STOLID') %rc = $setg_sys('PHLEGMATIC', 'STOLID')
- For more information about system globals, see "System and SubSystem globals and strings".