TMap < FString, FString > Add Causing Crash

Development Programming & Scripting
1

Hi,

I am trying to create a simple TMap < FString, FString >.

In my header file, I have this:

TMap<FString, FString> MyMap;

In my cpp file, I have this:

MyMap.Add("Key", "Value");

And it crashes at this line everytime.

Here is the line it is crashing on after add is called:

TSet<TTuple<FString,FString>,TDefaultMapHashableKeyFuncs<FString,FString,0>,FDefaultSetAllocator>::Emplace<TPairInitializer<FString && __ptr64,FString && __ptr64> >() [c:\users\nicho\documents\unreal projects\ue-source\engine\source\runtime\core\public\containers\set.h:488]

The class I am using is a subclass of UObject which I create via NewObject<>. I have tried the same line in My Game Instance and it works fine. I have also tried adding UPROPERTY() above it and I have tried to initialize in the constructor. All to no avail. Any ideas as to what is happening or where I have gone wrong?

2

Try using TEXT(“StringHere”) instead. Also, I tend to use emplace on maps, but it depends how you want the add to function, and whether you want it to overwrite previous entries.

3

Thanks, turns out something was corrupted. I recreated my UObject file and now it works as expected with no crash.