left-pad
===
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[String left pad](https://www.npmjs.com/package/left-pad)

Install
---
```
$ raco pkg install left-pad
```

Usage
---
```
#lang racket
(require left-pad)

(left-pad "foo" 5)
;; => "  foo"

(left-pad "foobar" 6)
;; => "foobar"

(left-pad 17 5 0)
;; => "00017"
```

*NOTE:* The third argument should `display` as a string with length 1. The function throws an error if this is not true.