Things that make you go "Argh!"

06 December 2005

A breakdown of problems and difficulties in the software development process. My thesis will consist in picking some of these, identifying potential solutions to them, and designing tools to implement those solutions.

The trouble is...

  • No one knows how this code works.
  • I don't know where (in the code) to look.
  • I can't tell what's happening.
  • I don't know what will happen if I change this.
  • My assumptions are wrong.
  • I can't penetrate the abstractions.
  • I'm getting lost in the details.
  • I can't tell what connects to what.
  • I don't know what this functon does.
  • I don't remember the name of...
  • I make lots of typos.
  • Abstract thinking/generalization is hard.
  • Everyone's code looks different.
  • I don't know why this code is the way it is.
  • The concepts about which I think don't match the concepts I can manipulate.
  • I need a place to explain code, its design, and its connections.
  • I'm using the wrong tool for the job.

What did I forget? What part of software development makes you go "argh"?

Comments

Just a couple that occur to me now:

My changes need to be backward compatible with existing data.

My changes need to be forward compatible with the next enhancement that will be requested.

My changes need to be sideways compatible with other changes that are being made at the same time.

This interface was poorly designed and can't be fixed now without a major effort.

Defining correct behavior in this circumstance can't be done for all cases.

This code has an undocumented side effect.

For optimal behavior, this code needs a piece of input that is not available.

Posted by Paul.

I was catch by your post on Kundera`s Immortality. Your work seems very interesting but just a proposal: at moments you go aaaarrrrghhhhh - do something else. Forget about the code. Try different aproach but in awhyle. It works.

Posted by StasY.

One more: I can't keep this all in my head.

Posted by David A. Mellis.

Oh, here are some of my favourite ARRRGH!s:

- I can't tell why this code does not work. Is it just a silly typo (Oh, yes I mean things like '=' instead of '==') or is it a fundamental misconception? Bughunting is painful and a huge waste of time.

- I find it hard to switch between programming languages. This is where a lot of my errors occur.

- It is hard to make a decision for or against a particular API or library. Usually you have to try them out and this takes tiiiiiiiiiiiiiiiiiiime.

- I sometimes have to bother with things where I am pretty darn sure that other people solved them in a better way but very often I can a) not find them or b) understanding their solutions takes longer than writing my own.

- But the biggest problem is what you just posted in your latest comment: I CAN'T KEEP THIS ALL IN MY HEAD. (I am usually surrounded by heaps of paper and UML diagrams to help me keeping an overview.)

Phew, thanks for giving me the opportunity to let this out. :-)

Exciting project Dave!

Posted by Ralph Ammer.

Hey! Good to hear from you, Ralph. You've got some great points, and I'll have to see how many I can tackle in the next 6 months.

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