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Fact function

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Namespace: Microsoft.Quantum.Diagnostics

Package: Microsoft.Quantum.QSharp.Foundation

Checks whether a classical condition is true, and throws an exception if it is not.

function Fact (actual : Bool, message : String) : Unit

Input

actual : Bool

The condition to be checked.

message : String

Failure message string to be used as an error message if the classical condition is false.

Output : Unit

Example

The following Q# snippet will throw an exception:

Fact(false, "Expected true.");

See Also