in reply to help reading from large file needed

That large a file and the necessity to be able to get at individual records is just crying for a database solution. SQLite springs to mind in that respect.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

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