Comment by username90

My view is that all programmers produce roughly the same amount of bugs per hour, it is just the bugs per feature which differ. Of course bad programmers can spend a lot of time fixing bugs as they go making the end result have few bugs, but still the main time-sink is fixing all of those bugs.

So to become fast, learn to write code which is very easy to verify that it works. If you get surprised when things work the first time you try then you are not fast.