Cacher is the code snippet organizer for pro developers

alt + cmd + b = go to implementations
alt + f7 = find references
cmd + n = = search for class
cmd + f12 = show outline of class
cmd + w = incremental select
cmd + shft + t = test
cmd + alt + back = go back last location
cmd + p = parameter information 
cmd + alt + f = pull out as a field
cmd + alt + p = pull out as parameter
cmd + shift + f10 = run current test
cmd + shift + j = collapse two lines into one
cmd + alt + l = format selection
cmd + alt + o = orginize import