[toronto-lisp] Effecient I/O in SBCL

[Abram Hindle]

I was running into problems with performance with SBCL.
I want to read huge CSV files and convert ASCII representations of
floats to floats.

A. what's an effecient way to convert a string to a float
B. what's an effecient way to read lines from a file
C. what's an effecient way to split substrings from a string (I don't
need to keep them around after I throw away the line)

abram