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[go] first-class functions, slice/append

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David Eisinger
2023-07-16 22:01:04 -04:00
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content/notes/golang/index.md
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@@ -126,6 +126,13 @@ I find [Go][1] really compelling, even though it's not super applicable to my jo
> A two-value assignment tests for the existence of a key: `i, ok := m["route"]` > A two-value assignment tests for the existence of a key: `i, ok := m["route"]`
* First-class functions
* Go supports first-class functions (functions as arguments and return values of other functions)
* Go has closures (so variables defined inside a function that returns a function get closed over)
* Go has anonymous functions (`func` w/o name)
* Slices
* Use `append` to add to a slice; this creates a new slice, so you have to capture the return value (`s = append(s, 100)`)
[17]: https://stackoverflow.com/a/40951013 [17]: https://stackoverflow.com/a/40951013
[18]: https://go.dev/doc/effective_go#named-results [18]: https://go.dev/doc/effective_go#named-results
[19]: https://exercism.org/tracks/go/concepts/errors [19]: https://exercism.org/tracks/go/concepts/errors