copy a csv file in go

To copy a csv file in go, we can make use of the ioutil package which provides utility functions for working with files and directories.

Here's an example code snippet that shows how to copy a csv file in go:

main.go
package main

import (
    "io/ioutil"
    "log"
)

func main() {
    // open the source csv file
    src, err := ioutil.ReadFile("source.csv")
    if err != nil {
        log.Fatal(err)
    }
    
    // write the contents of the source file to the destination file
    err = ioutil.WriteFile("destination.csv", src, 0644)
    if err != nil {
        log.Fatal(err)
    }
    
    log.Println("File copied successfully!")
}
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In this code, we first read the contents of the source csv file using the ioutil.ReadFile() function. Then, we write the contents to the destination file using the ioutil.WriteFile() function. The third argument to the WriteFile() function specifies the file permissions (in this case, 0644, which means read and write permissions for the owner and read-only permissions for others).

Note that this code doesn't perform any error handling beyond logging the error and exiting the program. In a real-world application, you'll probably want to provide more robust error handling.