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layout: stdlib-reference
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# interface IFunc\<TR, each TP\>

*Inherits from:* [IMutatingFunc](../imutatingfunc-019/index.html)\<[TR](../imutatingfunc-019/index.html#typeparam-TR), [TP](../imutatingfunc-019/index.html#typeparam-TP)\>

## Description

Represents an interface for a function that can take multiple parameters.
This interface inherits from <span class='code'><a href="../imutatingfunc-019/index.html" class="code_type">IMutatingFunc</a></span> but is used for non-mutating functions.


## Generic Parameters

####  <a id="typeparam-TR"></a>TR
####  <a id="typeparam-TP"></a>TP

## Methods

* [operator\(\)](operatorx28x29)


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operator() <operatorx28x29>
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