FEmitter::TryInput

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Description

Retrieves the value from the given input, if present. A null reference otherwise. Note: it does not report an error if the value is missing. It is safe to pass returned value to other Emitter functions as argument even if null. For instance, the following is safe and idiomatic

FValueRef Value = Emitter.CheckIsArithmetic(Emitter.TryInput(&A)); UE_MIR_CHECKPOINT(Emitter); if (Value) { /* handle case when value is provided */ }

Keep in mind that a reference can be null (its Value is null) or invalid (which means that it's null OR poison).

FValueRef TryInput  
(  
    const FExpressionInput * Input  
)  
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FValueRef TryInput (     const FExpressionInput * Input )