Hm. Use one letter variable names for scoped variables? Excerpt from lines 92-112:
"* The length of an identifier determines its scope. Use one-letter variables for short block/method parameters, according to this scheme:
a,b,c: any object
d: directory names
e: elements of an Enumerable
ex: rescued exceptions
f: files and file names
i,j: indexes
k: the key part of a hash entry
m: methods
o: any object
r: return values of short methods
s: strings
v: any value
v: the value part of a hash entry
x,y,z: numbers
And in general, the first letter of the class name if all objects are of that type."
"* The length of an identifier determines its scope. Use one-letter variables for short block/method parameters, according to this scheme: