Rust

CSV Set Column Name

Demonstrates how to set the name of a column in a CSV. Rust

// We have the following CSV...

// permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
// lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
// mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
// flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
// infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
// gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

let b_crlf = true;
let sb = chilkat::StringBuilder::new();
let _ = sb.append_line("permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round", b_crlf);
let _ = sb.append_line("lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b", b_crlf);
let _ = sb.append_line("mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed", b_crlf);
let _ = sb.append_line("flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a", b_crlf);
let _ = sb.append_line("infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a", b_crlf);
let _ = sb.append_line("gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed", b_crlf);

let csv = chilkat::Csv::new();

csv.set_has_column_names(true);
let _ = csv.load_from_string(&sb.get_as_string().unwrap_or_default()).is_ok();

// Get each column name..
let mut num_cols = csv.num_columns();
let mut i = 0;
while i < num_cols {
    println!("{}", csv.get_column_name(i).unwrap_or_default());
    i = i + 1;
}

println!("---");

// Change the "numEmps" column name to "employeeCount"
let _ = csv.set_column_name(2, "employeeCount").is_ok();

num_cols = csv.num_columns();
i = 0;
while i < num_cols {
    println!("{}", csv.get_column_name(i).unwrap_or_default());
    i = i + 1;
}

// Use the updated column name...
println!("---");
println!("{}", csv.get_cell_by_name(3, "employeeCount").unwrap_or_default());

// Output should be:

// permalink
// company
// numEmps
// category
// city
// state
// fundedDate
// raisedAmt
// raisedCurrency
// round
// ---
// permalink
// company
// employeeCount
// category
// city
// state
// fundedDate
// raisedAmt
// raisedCurrency
// round
// ---
// 105