Hint message "Local variable xx does not seem to be initialized" problem

[PascalDragon]

So what is best way to to this?

Just continue to build within Lazarus and simply learn what the messages mean and whether you can safely ignore or disable them.

Code: Pascal  [Select][+][-]

1.   a: TStringArray =();
2.   b : string ='';
3.  

But I thought that was supposed to be implicit for managed types, or is there a mode dependency there?

Yes, it's implicit and the reason why I personally am opposed to this hint cause unlike for the Result variable it definitely makes no difference.

But I thought that was supposed to be implicit for managed types, or is there a mode dependency there?

It depends on two things:
- heap or stack, heap is clean, stack is not (with the default MM)

Implicit initializaton depends on neither of these and happens always.

[MarkMLl]

Apropos increasing the size of a dynamic array:

Not a power of two but the golden ratio is way more efficient. ~1.618

Why? Not arguing, interested...

...and as a secondary question, is there a standard class that implements an extensible buffer with "append to end" and "remove from start" support?

MarkMLl

[MarkMLl]

...and as a secondary question, is there a standard class that implements an extensible buffer with "append to end" and "remove from start" support?

Well, trusting Thaddy's judgement, that was a fun little exercise.

Some of the issues- not all of which I've yet addressed- are that it's desirable to have a "how many bytes can I add?" property, which is dependent on the maximum permitted size which is (original_size * (golden_ratio ^ n)) hence susceptible to rounding errors.

MarkMLl