Re: (unless ...) vs (when (not ...))

[Eric Abrahamsen]

Hongyi Zhao <hongyi.zhao@gmail.com> writes:

> Should I use (unless ...) or (when (not ...))? Which one is preferable?

In terms of compilation, they both turn into `if' statements, so there's
no real difference there. Personally I find that, when I'm "reading" the
code out loud in my head, one approach will sound more natural than the
other, which can make things a little quicker to parse mentally. But it
really depends on what the condition is and how it's tested.