gleam_string_builder

A Gleam library for building strings

let formatter =
  sb.new
  |> sb.string("The winner is ")
  |> sb.arg_string
  |> sb.string(" with ")
  |> sb.arg_int
  |> sb.string(" points!!")
  |> sb.end2

formatter("Sam", 12)
==
"The winner is Sam with 12 points!!"

Custom formatter

A custom formatter is a function that takes a callback and then returns another function that calls that callback with a string.

fn custom_formatter(callback) {
  fn(state: State) {
    let str = state_to_string(state)
    callback(str)
  }
}

Then you can add this custom formatter to a pipeline using compose.

import string_builder as sb

let formatter =
  sb.new
  |> sb.string("The current state is ")
  |> sb.compose(custom_formatter)
  |> sb.string("!")
  |> sb.end1

formatter(Done)

Installation

This package can be installed by adding gleam_string_builder to your rebar.config dependencies:

{deps, [
    gleam_string_builder
]}.