# calc

**Repository Path**: dnrops/calc

## Basic Information

- **Project Name**: calc
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-05-02
- **Last Updated**: 2021-05-02

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# calc
[![Build Status](https://travis-ci.org/redox-os/calc.svg?branch=master)](https://travis-ci.org/redox-os/calc)
[![crates.io](https://meritbadge.herokuapp.com/calculate)](https://crates.io/crates/calculate)


`calc` is a Rust library for tokenizing and evaluating arithmetic expressions with a command line application of the same name included.

**NOTE**: The name of the project, binary, and library are `calc` but the package name is `calculate`. This will remain depending on if this project can acquire the `calc` crate which is currently being squatted on.

# Usage

## As a Library

Add `calc` as a dependency in your `Cargo.toml`:
```toml
[dependencies]
calculate = "0.5.*"
```

Then make use of the library functions:
```rust
extern crate calc;

use calc::eval;
use std::io::{self, BufRead, stdout, stdin, Write};

fn main() {
    let stdout = stdout();
    let mut stdout = stdout.lock();
    let stdin = stdin();
    for line in stdin.lock().lines() {
        match line.unwrap().trim() {
            "" => (),
            "exit" => break,
            s => writeln!(stdout, "{}", eval(s)).unwrap(),
        }
    }
}
```

## As an Executable

```bash
$ cargo install calculate
...
$ calc
```