string-formatting – w3toppers.com

Chart.js – Formatting Y axis

I had the same problem, I think in Chart.js 2.x.x the approach is slightly different like below. ticks: { callback: function(label, index, labels) { return label/1000+’k’; } } More in details var options = { scales: { yAxes: [ { ticks: { callback: function(label, index, labels) { return label/1000+’k’; } }, scaleLabel: { display: true, … Read more

How can I append a formatted string to an existing String?

I see now that String implements Write, so we can use write!: use std::fmt::Write; pub fn main() { let mut a = “hello “.to_string(); write!(a, “{}”, 5).unwrap(); println!(“{}”, a); assert_eq!(“hello 5”, a); } (Playground) It is impossible for this write! call to return an Err, at least as of Rust 1.47, so the unwrap should … Read more