Hi there,
I do have one type A file, that holds about 25.000 A-ids, one per line.
Furher I have 500 type B files in a dir that hold 10-500 B-ids each, one per
line.
All files are -T
Now i want to generate 500 type C files, corrosponding to the b files:
each B-id, that occours in a B-type file AND the A-type file should go into
the corrosponding C-file.
Each A id is unique in the A file, each B-id is unique in its file BUT NOT i
all the Bfiles: each B id may occure in one or more B files.
Im lookin for a fast and memory concious way to do that.
I guess, there might be better ideas then
foreach bfile in B-file-dir
foreach b-id in Bfile
foreach a-id in Afile
print to Cfile and next Bfile if a_id eq b_id
thank a lot, wolf
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