Magnet pattern is purely about making the code you write nicer to look at. (for spray it had more reasons to exist but for akka-http it is purely a usability pr

Magnet pattern is purely about making the code you write nicer to look at. (for spray it had more reasons to exist but for akka-http it is purely a usability problem) Basically it allows you to write def f[T](fMagnet: FMagnet[T]): X => Y f(t) { x => // ... } instead of def f[T](t: T)(implicit tc: TC[T]): X => Y f(t).apply { x => // ... } so just about removing one ".apply" (see https://github.com/akka/akka-http/issues/100 https://github.com/akka/akka-http/issues/100 where i copy pasted the code bits from) But yeah first time I read up on the magnet pattern it was a wtf moment.