GlobalValues: Difference between revisions
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<code>GlobalValue</code> objects provide a mechanism for default values not associated with particular object instantiations. This is useful, for example, when working with global functions. | |||
== Specific Types == | |||
=== Doubles === | === Doubles === | ||
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</pre></code> | </pre></code> | ||
To fetch the value, do something like: | The optional parameter to <code>MakeDoubleChecker</code> defines the minimum for the value. A second optional parameter would define the maximum. By creating a <code>Double</code> object w/ value 2, we set 2 as the default for this parameter. | ||
To fetch the value at any point, do something like: | |||
<code><pre> | <code><pre> | ||
Latest revision as of 19:43, 25 March 2008
GlobalValue objects provide a mechanism for default values not associated with particular object instantiations. This is useful, for example, when working with global functions.
Specific Types
Doubles
To declare a double valued global parameter, do something like the following:
#include "ns3/global-value.h"
#include "ns3/double.h"
GlobalValue g_sampleInterval("SampleInterval",
"How frequently samples are made.",
Double(2.0),
MakeDoubleChecker<double>(0.0));
The optional parameter to MakeDoubleChecker defines the minimum for the value. A second optional parameter would define the maximum. By creating a Double object w/ value 2, we set 2 as the default for this parameter.
To fetch the value at any point, do something like:
Simulator::Schedule(Seconds(((Double)(g_sampleInterval
.GetValue())).Get()),
Example::Sample);