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# 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. ## Elm Installation Refer to the [Exercism help page](http://exercism.io/languages/elm) for Elm installation and learning resources. ## Writing the Code The first time you start an exercise, you'll need to ensure you have the appropriate dependencies installed. ```bash $ npm install ``` Execute the tests with: ```bash $ npm test ``` Automatically run tests again when you save changes: ```bash $ npm run watch ``` As you work your way through the test suite, be sure to remove the `skip <|` calls from each test until you get them all passing! ## Source Wikipedia [https://en.wikipedia.org/wiki/Isogram](https://en.wikipedia.org/wiki/Isogram) ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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66 entries across 66 versions & 1 rubygems