Is there some way with a Printf format string to say this: Printf.sprintf "%03d_%03d_%03d" millions thousands units But, without having to compute millions, thousands and units (as I naively implemented)? I.e. I would like to have a ‘_’ to separate every three digits starting from the right.

[image] UnixJunkie: Is there some way with a Printf format string to say this: Yes, it is documented in the manual: Printf.sprintf "%#d". Cheers, Nicolas

Kind of "financial" integer printing format

Learning

XVilka June 27, 2023, 3:42am 7

See also:

Decimal floating point arithmetic
Fixed Point Arithmetic support - language design - Rust Internals
Fixed-point number support? · Issue #1974 · ziglang/zig · GitHub
fixed - Rust
https://crates.io/crates/decimal/
https://crates.io/crates/rust-decimal
https://crates.io/crates/bigdecimal

Having something like that in OCaml would be indeed useful.

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Kind of "financial" integer printing format

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