Tips for golfing in > (Fish) Since I've been seeing more >&lt;> submissions floating around lately, I thought it might be a good idea to have a tips page.

Please stick to one tip per post, unless they are closely related.

Official Python interpreter

Online interpreter (some bugs present, but good for most cases)
Checking against 0

Using ?! instead of 0=? typically saves a byte.

However, just a standard ? may sometimes be better if you can afford a bit of restructuring

?!vA
  B


versus

?vB
 A