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Integration & APIs
Fixed-width flat file parser
Parse fixed-width extracts with multiple record types and implied decimals — the shape real SAP, banking and retail files actually take.
Built for what these files are actually like: multiple record types in one file discriminated by a value at a fixed position, and implied decimals — 000000418050 with dec2 is 4180.50, not 418,050. Reading that as an integer is a reliable way to be out by a factor of a hundred all the way downstream. Positions are 1-based, as every flat-file spec is written. Runs in your browser.
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These exist because the underlying problem is real. If the numbers you just put in look uncomfortable, that is usually worth a conversation.