Slap in that 1+1 = 2 blank function template so you don't have to do all the syntaxes
me@jaykilleen.com wrote this about 3 years ago and it was last updated about 3 years ago.
Sometimes you just need a dirt simple template of a Power Query M function to copy/paste and start hacking at to turn into something useful.
And here it is...
some additional comments to guide you....
let
f = (x,y) =>
let
e = x + y
in
e
in
f