Turn a CSV file
into typed code

How columns become types

Every CSV cell is text, so on its own a CSV file can't tell you whether a column is really a number, a boolean, or a date. This tool doesn't guess — Type declarations mode treats every column as a string, which is what a CSV genuinely gives you before you parse it further. If you know a column should be numeric, that's a cast you add after parsing.

Real libraries, not string-splitting

Parsing Code mode uses each language's actual CSV handling — csv.DictReader in Python, encoding/csv in Go, Apache Commons CSV in Java, CsvHelper in C#, the built-in CSV class in Ruby — because hand-rolled comma-splitting breaks the moment a field contains a quoted comma or an embedded newline, which real-world CSVs do constantly.