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| author | Louis Pilfold <louis@lpil.uk> | 2023-12-21 14:03:41 +0000 |
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| committer | Louis Pilfold <louis@lpil.uk> | 2023-12-21 14:03:41 +0000 |
| commit | 4efb34bd728732101432843ed0bfbeb971272287 (patch) | |
| tree | 71b3b767c417809d92280cec64424c31c9a475be /src/content/chapter2_flow_control/lesson02_variable_patterns/text.html | |
| parent | 2a6ae1fa5408247c95bf4a7d59e5038342a2a125 (diff) | |
| download | tour-4efb34bd728732101432843ed0bfbeb971272287.tar.gz tour-4efb34bd728732101432843ed0bfbeb971272287.zip | |
Add chapters
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| -rw-r--r-- | src/content/chapter2_flow_control/lesson02_variable_patterns/text.html | 17 |
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diff --git a/src/content/chapter2_flow_control/lesson02_variable_patterns/text.html b/src/content/chapter2_flow_control/lesson02_variable_patterns/text.html new file mode 100644 index 0000000..8154979 --- /dev/null +++ b/src/content/chapter2_flow_control/lesson02_variable_patterns/text.html @@ -0,0 +1,17 @@ +<p> + The case expression is the most common kind of flow control in Gleam code. It + is similar to `switch` in some other languages, but more powerful than most. +</p> +<p> + It allows the programmer to say "if the data has this shape then run this + code", a process called called <em>pattern matching</em>. +</p> +<p> + Gleam performs <em>exhaustiveness checking</em> to ensure that the patterns in + a case expression cover all possible values. With this you can have confidence + that your logic is up-to-date for the design of the data you are working with. +</p> +<p> + Try commenting out patterns or adding new redundant ones, and see what + problems the compiler reports. +</p> |