mirror of
https://github.com/rjNemo/underscore
synced 2026-06-06 02:26:42 +00:00
135 lines
No EOL
3.5 KiB
Markdown
135 lines
No EOL
3.5 KiB
Markdown
# Underscore
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`underscore` is a `Go` library providing useful functional programming helpers without extending any built-in objects.
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It is mostly a port from the `underscore.js` library based on generics brought by `go1.18`.
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## Usage
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Install the library using
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```shell
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go get github.com/rjNemo/underscore
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```
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Please check out the [examples](examples) to see how to use the library.
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```go
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package main
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import (
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"fmt"
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u "github.com/rjNemo/underscore"
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)
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func main() {
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numbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9}
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// filter even numbers from the slice
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evens := u.Filter(numbers, func(n int) bool { return n%2 == 0 })
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// square every number in the slice
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squares := u.Map(evens, func(n int) int { return n * n })
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// reduce to the sum
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res := u.Reduce(squares, func(n, acc int) int { return n + acc }, 0)
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fmt.Println(res) // 120
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}
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```
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## Getting Started
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These instructions will get you a copy of the project up and running on your local machine for development and testing
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purposes.
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### Prerequisites
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You need at least `go1.18` for development. The project is shipped with a [Dockerfile](Dockerfile) based on `go1.18`. If
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you prefer local development, at the moment the easiest way to do it:
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```shell script
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go install golang.org/dl/go1.18beta1@latest
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go1.18beta1 download
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```
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### Installing
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First clone the repository
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```shell
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git clone https://github.com/rjNemo/underscore.git
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```
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Install dependencies
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```shell
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go mod download
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```
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And that's it.
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## Tests
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Building the docker image will run the tests automatically. Otherwise, you can simply run:
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```shell
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go test ./...
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```
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## Functions
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`underscore` provides 100s of functions that support your favorite functional helpers
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### Collections
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- `All`
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- `Any`
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- `Contains` (only numerics values at the moment)
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- `Each`
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- `Filter`
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- `Find`
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- `Map`
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- `Max`
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- `Min`
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- `Partition`
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- `Reduce`
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### Chaining
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Calling `chain.Of` will cause all future method calls to return wrapped values. When you've finished the computation,
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call `Value` to retrieve the final value.
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Methods not returning a slice such as `Reduce`, `All`, `Any`, will break the `Chain` and return `Value` instantly.
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## Built With
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- [Go](https://go.dev/) - Build fast, reliable, and efficient software at scale
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## Contributing
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Please read [CONTRIBUTING.md](CONTRIBUTING.md) for details on our code of conduct, and the process for submitting pull
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requests to us.
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## Versioning
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We use [SemVer](http://semver.org/) for versioning. For the versions available, see
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the [tags on this repository](https://github.com/rjNemo/underscore/tags).
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## Authors
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- **Ruidy** - _Initial work_ - [Ruidy](https://github.com/rjNemo)
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See also the list of [contributors](https://github.com/rjNemo/underscore/contributors) who participated in this project.
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## License
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This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details
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## Acknowledgments
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This project is largely inspired by [Underscore.js](https://underscorejs.org/#) library. Check out the original project
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if you don't already know it. |