Developing Apama Applications > Developing Apama Applications in EPL > Using Correlator Plug-ins in EPL > When to use plug-ins
When to use plug-ins
A custom plug-in is a suitable solution in the following situations:
*You have an in-house or third-party library of (possibly complex) C/C++ functions that you want to re-use.
*The operations you need to perform are more easily/efficiently performed using the C/C++ language than using EPL. For example, you need to use data structures that are not easily represented in EPL.
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