73 lines
2.1 KiB
Markdown
73 lines
2.1 KiB
Markdown
# Two Fer
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`Two-fer` or `2-fer` is short for two for one. One for you and one for me.
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Given a name, return a string with the message:
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```text
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One for X, one for me.
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```
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Where X is the given name.
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However, if the name is missing, return the string:
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```text
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One for you, one for me.
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```
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Here are some examples:
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|Name |String to return
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|:-------|:------------------
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|Alice |One for Alice, one for me.
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|Bob |One for Bob, one for me.
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| |One for you, one for me.
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|Zaphod |One for Zaphod, one for me.
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Run the tests with:
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```bash
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bats two_fer_test.sh
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```
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After the first test(s) pass, continue by commenting out or removing the
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`[[ $BATS_RUN_SKIPPED == true ]] || skip`
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annotations prepending other tests.
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To run all tests, including the ones with `skip` annotations, run:
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```bash
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BATS_RUN_SKIPPED=true bats two_fer_test.sh
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```
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## Source
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[https://github.com/exercism/problem-specifications/issues/757](https://github.com/exercism/problem-specifications/issues/757)
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## External utilities
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`Bash` is a language to write "scripts" -- programs that can call
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external tools, such as
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[`sed`](https://www.gnu.org/software/sed/),
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[`awk`](https://www.gnu.org/software/gawk/),
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[`date`](https://www.gnu.org/software/coreutils/manual/html_node/date-invocation.html)
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and even programs written in other programming languages,
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like [`Python`](https://www.python.org/).
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This track does not restrict the usage of these utilities, and as long
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as your solution is portable between systems and does not require
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installation of third party applications, feel free to use them to solve
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the exercise.
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For an extra challenge, if you would like to have a better understanding
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of the language, try to re-implement the solution in pure `Bash`,
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without using any external tools. Note that there are some types of
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problems that bash cannot solve, such as performing floating point
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arithmetic and manipulating dates: for those, you must call out to an
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external tool.
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others
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have completed the exercise.
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