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Go
CSV Read/Write with encoding/csv
`encoding/csv` parses RFC 4180 CSVs. Read row-by-row with `Read()` or all at once with `ReadAll()`. Same for writing — flush with `Writer.Flush()` before closing.
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PHP
Stream Large CSV with Generator
Iterate over a CSV file row-by-row without ever loading the whole file into memory. Uses a generator so consumers can foreach naturally and PHP cleans up the file handle.
Rust
CSV Read/Write with the csv Crate
`csv` + `serde` lets you read/write CSVs directly into typed structs. No manual field parsing; column order tolerant via headers.
Python
Stream Large CSV with DictReader
Iterate over a CSV row-by-row as a dict — never loading the whole file. Tolerant of UTF-8 BOMs (utf-8-sig). Generator wrapper makes consumers naturally use for/break.