I have need to search a directory and return the name of the most recent
file matching a given pattern. Given a directory with these files and
timestamps,
q.pattern1.abc Feb 13
r.pattern1.cdf Feb 12
s.pattern1.efg Feb 10
t.pattern2.abc Feb 13
u.pattern2.xyz Feb 14
v.pattern2.efg Feb 10
calling my_function("/path/to/dir", "pattern1") will return q.pattern1.abc
and calling my_function("/path/to/dir", "pattern2") will return
u.pattern2.xyz.
My question is, what would be a reasonable behavior/result/return value if:
1. "/path/to/dir" does not exist or is not readable
2. no files match the given pattern
Also, what would be a reasonable name for such a function?
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