Struct CsvWriter 

pub struct CsvWriter { /* private fields */ }

A streaming CSV writer that builds output row-by-row.

Implementations

impl CsvWriter

pub fn new(headers: Vec<String>, delimiter: char) -> Self

Create a writer with the given column headers and delimiter.

pub fn write_row(&mut self, values: &[&str])

Append a row of string values. Extra values are truncated; missing values are filled with empty strings.

pub fn write_row_f64(&mut self, values: &[f64])

Append a row of f64 values formatted to 6 significant figures.

pub fn finish(self) -> String

Return the accumulated CSV as a string.

pub fn row_count(&self) -> usize

Number of data rows written (not counting the header).