Hi, if you won't know which header section you need until you start parsing the second file, I'd think you'd have a hard time doing what you want efficiently on the fly. Can you simply break your FASTA file into separate files in advance, one per header?


The way forward always starts with a minimal test.

In reply to Re: Loading only portions of a file at any given time by 1nickt
in thread Loading only portions of a file at any given time by TJCooper

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