Filter backings from recommended projects

[kyeah]

hey it's me again, just filtering backings, don't mind me

in case you forgot:

We filter user's backed projects from recommendations on web, and we also filter them in the native Thanks activity. Filtering them here will homogenize the backer experience across our platforms and stop people from asking jeff what's up with that rec engine.

The Thanks activity also filters backings from staff picks, so that's a possibility here.

cc. @kickstarter/native-squad

[luoser]

nice! our general code style when using multiple lenses within () is to drop it to its own new section, i.e.

filters.append(
  .defaults
    |> DiscoveryParams.lens.recommended .~ true
    |> DiscoveryParams.lens.backed .~ false
)

Also we continue to use the pipe |> here since we are piping values into the .defaults. I think <> is more about composing, e.g. in our styles, but I don't fully remember and my xcode isn't opening right now to find the operator

[edit] here it is

[kyeah]

ah cool! I forgot where to find these ops and didn't know how to use 'em, but this makes sense 🙇