I have a null object reference but object ..
Tag : null
The method ‘[]’ can’t be unconditionally invoked because the receiver can be ‘null’. Try making the call conditional (using ‘?.’) or adding a null check to the target..
Semantically, C++ std::optional, Rust Option<T>, and other optional/nullable types represent a value that can be present or absent: you have to handle both cases, or you can opt-in to ..
One part of my program fetches data from many tables and columns in my database for processing. Some of the columns might be null, but in the current processing context that is an ..