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Contents

# Isogram

Determine if a word or phrase is an isogram.

An isogram (also known as a "nonpattern word") is a word or phrase without a
repeating letter, however spaces and hyphens are allowed to appear multiple times.

Examples of isograms:

- lumberjacks
- background
- downstream
- six-year-old

The word *isograms*, however, is not an isogram, because the s repeats.

## Source

Wikipedia [https://en.wikipedia.org/wiki/Isogram](https://en.wikipedia.org/wiki/Isogram)

## Running tests

In order to run the tests, issue the following command from the exercise
directory:

For running the tests provided, `rebar3` is used as it is the official build and
dependency management tool for erlang now. Please refer to [the tracks installation
instructions](http://exercism.io/languages/erlang/installation) on how to do that.

In order to run the tests, you can issue the following command from the exercise
directory.

```bash
$ rebar3 eunit
```

### Test versioning

Each problem defines a macro `TEST_VERSION` in the test file and
verifies that the solution defines and exports a function `test_version`
returning that same value.

To make tests pass, add the following to your solution:

```erlang
-export([test_version/0]).

test_version() ->
  1.
```

The benefit of this is that reviewers can see against which test version
an iteration was written if, for example, a previously posted solution
does not solve the current problem or passes current tests.

## Questions?

For detailed information about the Erlang track, please refer to the
[help page](http://exercism.io/languages/erlang) on the Exercism site.
This covers the basic information on setting up the development
environment expected by the exercises.

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

54 entries across 54 versions & 1 rubygems

Version Path
trackler-2.2.1.110 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.109 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.108 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.107 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.106 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.105 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.104 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.103 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.102 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.101 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.100 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.99 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.98 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.97 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.96 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.95 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.94 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.93 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.92 tracks/erlang/exercises/isogram/README.md
trackler-2.2.1.91 tracks/erlang/exercises/isogram/README.md