Ways to initialize a record
Suppose you have these definitions:
Options: array of JavaVMOption;
How do you initialize them?
Back in the days, you would use:
Options := nil;
FillChar(VM_Args, SizeOf(VM_Args), #0);
These days, you would use:
Options := Default(JavaVMOption); // fail to compile
VM_Args := Default(JavaVMInitArgs);
However, Default(JavaVMOption) would fail to compile, because you need to use a type of the variable, not the element of an array that declares the type.
So, you'll rewrite Options as
and then Options := Default(TArray<JavaVMOption>);
You can also use:
In addition, you can also do this, by way of passing a parameter:
procedure DoSomething(out Options: TArray<JavaVMOption>);