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feat: ✨ add examples of record pattern matching #88
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21d35a7
refactor: :truck: make space for new record destructuring chapter
xxKeefer 3f7b0e7
feat: :sparkles: add examples and code for record destructuring
xxKeefer 6d2d59d
Merge branch 'main' into issue-56_record-destructuring-example
xxKeefer a6ea7e8
refactor: address feedback from code review
xxKeefer 8cef99a
refactor: Apply suggestions from code review
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15 changes: 15 additions & 0 deletions
15
src/content/chapter3_data_types/lesson04_record_pattern_matching/code.gleam
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import gleam/io | ||
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pub type Fish { | ||
Starfish(name: String, favourite_color: String) | ||
Jellyfish(name: String, jiggly: Bool) | ||
} | ||
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pub fn main() { | ||
let lucy = Starfish("Lucy", "Pink") | ||
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case lucy { | ||
Starfish(_, favourite_color) -> io.debug(favourite_color) | ||
Jellyfish(name, ..) -> io.debug(name) | ||
} | ||
} |
12 changes: 12 additions & 0 deletions
12
src/content/chapter3_data_types/lesson04_record_pattern_matching/en.html
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<p> | ||
It is possible to pattern match on a record, this allows for the extraction | ||
of multiple field values from a record into distinct variables, similar to matching on a tuple or a list. | ||
</p> | ||
<p> | ||
The let key word can only match on single variant custom types. For types with more variants | ||
a case expression must be used. | ||
</p> | ||
<p> | ||
It is possible to use underscore <code>_</code> or the spread syntax <code>..</code> to | ||
discard fields that are not required. | ||
</p> |
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It would be good to explain the difference between them here, and show the difference in the code example.