Update

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Overloads

Update(const FString &, const TFunction< bool(int32 &)> &)

Description

Updates an exiting value. The operation is atomic from the caller perspective. The function reads the actual value and invoke UpdateFn callback with the actual value. The callback can update the actual value or decline the operation. If the key is not found, the callback is not invoked.

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

One of the following code

• EStatusCode::Success if the entire operation succeeded.
• EStatusCode::BadType if the key/value pair exists, but the proposed value did not match the actual value type.
• EStatusCode::Declined if the callback UpdateFn returned false and the operation was declined.

Parameters

Update(const FString &, const TFunction< bool(uint32 &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(int64 &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(uint64 &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(float &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(double &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(bool &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(FString &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool> & UpdateFn )

Update(const FString &, const TFunction< bool(FDateTime &)> &)

virtual EStatusCode Update  
(  
    const FString & Key,  
    const TFunction < bool &)> & UpdateFn  
)  
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virtual EStatusCode Update (     const FString & Key,     const TFunction < bool &)> & UpdateFn )