FMglee

FMGlee is a simple string formatting library. It exposes two main APIs to format strings, one driven by pipes, and the other more inline.

gleam add fmglee

import fmglee
import gleeunit/should

fmglee.new("Number %d, float %f, string %s")
|> fmglee.d(99)
|> fmglee.f(12.9)
|> fmglee.s("Hello!")
|> fmglee.build
|> should.equal("Number 99, float 12.9, string Hello!")

// OR

fmglee.fmt("Number %d, float %f, string %s", with: [fmglee.D(99), fmglee.F(12.9), fmglee.S("Hello!")])
|> should.equal("Number 99, float 12.9, string Hello!")

Float numbers can be rounded, and delimited using the following specifier options (examples use this input 1234.5678).

• “%.2f” -> Rounds the float to two decimal places - “1234.56”
• “%.0f” -> Rounds the float to zero decimal places - “1234”
• “%,f” -> Formats large floats with a comma delimiter - “1,234.5678”
• “%-.2f” -> Formats the float with a hyphen delimiter and rounds to two decimal places - “1-234.56”

Further documentation can be found at https://hexdocs.pm/fmglee.

Development

gleam run   # Run the project
gleam test  # Run the tests
gleam shell # Run an Erlang shell