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ManagedLibraryExpressionID[expr]

returns the positive integer ID associated with expr if it is a managed library expression and $Failed otherwise.

ManagedLibraryExpressionID[expr,mname]

only returns the ID if expr is associated with the registered manager having name mname.

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ManagedLibraryExpressionID

ManagedLibraryExpressionID[expr]

returns the positive integer ID associated with expr if it is a managed library expression and $Failed otherwise.

ManagedLibraryExpressionID[expr,mname]

only returns the ID if expr is associated with the registered manager having name mname.

Details

Examples

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Basic Examples  (1)

Load example LibraryFunction object that implements a simple linear congruential random generator. This will also load the "LCG" library expression manager:

Wolfram Language code: setInstanceState = LibraryFunctionLoad["demo_managed", "setInstanceState", {Integer, {Integer, 1}}, "Void"];

Create an instance of a linear congruential generator:

Wolfram Language code: g1 = CreateManagedLibraryExpression["LCG", randomLCG]

Get its unique ID:

Wolfram Language code: id = ManagedLibraryExpressionID[g1]

Confirm that it is a library expression managed by the "LCG" manager:

Wolfram Language code: id === ManagedLibraryExpressionID[g1, "LCG"]

Scope  (1)

Load example LibraryFunction objects that implement a simple linear congruential random generator. This will also load the "LCG" library expression manager:

Wolfram Language code: setInstanceState = LibraryFunctionLoad["demo_managed", "setInstanceState", {Integer, {Integer, 1}}, "Void"]; generateFromInstance = LibraryFunctionLoad["demo_managed", "generateFromInstance", {Integer, {Integer, _}}, {Real, _}];

Create an instance of a linear congruential generator:

Wolfram Language code: g1 = CreateManagedLibraryExpression["LCG", randomLCG]

Get its unique ID:

Wolfram Language code: id = ManagedLibraryExpressionID[g1]

Confirm that it is a library expression managed by the "LCG" manager:

Wolfram Language code: id === ManagedLibraryExpressionID[g1, "LCG"]

Set its parameters using the unique ID assigned by CreateManagedLibraryExpression:

Wolfram Language code: setInstanceState[id, {1664525, 1013904223, 2 ^ 32, 0}]

Generate two pseudorandom numbers from the instance:

Wolfram Language code: generateFromInstance[id, {2}]

Unload the library functions:

Wolfram Language code: LibraryFunctionUnload[generateFromInstance] LibraryFunctionUnload[setInstanceState]
Wolfram Research (2014), ManagedLibraryExpressionID, Wolfram Language function, https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html.

Text

Wolfram Research (2014), ManagedLibraryExpressionID, Wolfram Language function, https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html.

CMS

Wolfram Language. 2014. "ManagedLibraryExpressionID." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html.

APA

Wolfram Language. (2014). ManagedLibraryExpressionID. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html

BibTeX

@misc{reference.wolfram_2026_managedlibraryexpressionid, author="Wolfram Research", title="{ManagedLibraryExpressionID}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_managedlibraryexpressionid, organization={Wolfram Research}, title={ManagedLibraryExpressionID}, year={2014}, url={https://reference.wolfram.com/language/ref/ManagedLibraryExpressionID.html}, note=[Accessed: 12-June-2026]}