Stocks & Commodities V. 25:5 (46-56): Sidebar: Perl code for merge_symbols program by Kevin Morgan

Stocks & Commodities V. 25:5 (46-56): Sidebar: Perl code for merge_symbols program by Kevin Morgan

# Program: merge_symbols.pl

# Copyright (c) 2006, Special-K Trading, LLC

# All rights reserved.

# This Perl program opens and reads in two files, old_open_syms_next and

# preferred_syms. All the symbols from old_open_syms_next file are merged

# into the list of symbols from preferred_syms, and output to a file

# all_syms, avoiding duplication. Any existing copy of all_syms is

# overwritten.

# A file called old_open_syms is created (overwriting any previous version),

# and all symbols in old_open_syms_next that are NOT in the preferred_syms

# file are written to it. A file called new_syms is created (also with

# overwriting). new_syms is written with the symbols that were uniquely in

# the preferred_syms file (relative to the old_open_syms_next file.