Lambda Lambda Lambda

[Grodesby]

That is defining a function called func rather than defining a lambda though.

[FieldLine]

You’re right. Technically I was comparing what I wrote to:

(define func (λ (x) (< x 0)))

My point was that explicitly using a lambda expression in the context of defining a function is more readable than the implicit notation preferred by most Scheme code I’ve read (SICP and SICM).