How to have an in-place string that updates on stdout

Question

I want to output to stdout and have the output \"overwrite\" the previous output.

For example; if I output On 1/10, I want the next output On 2/10

Answer 1

Use this solution if you want to rewrite multiple lines to the output. For instance, I made a decent Conway's "Game of Life" output using this method.

DISCLAIMER: this only works on ANSI Terminals, and besides using fmt this isn't a Go-specific answer either.

fmt.Printf("\033[0;0H")
// put your other fmt.Printf(...) here

Brief Explanation: this is an escape sequence which tells the ANSI terminal to move the cursor to a particular spot on the screen. The \033[ is the so-called escape sequence, and the 0;0H is the type of code telling the terminal move the cursor to row 0, column 0 of the terminal.

Source: https://en.wikipedia.org/wiki/ANSI_escape_code#Sequence_elements