Array Method Package

This package provides convenient methods for arrays and slices in Go, inspired by JavaScript's Array methods. It allows for easy operations such as filtering, mapping, searching, and more.

Installation

To use this package, install it with the following command:

go get github.com/hiroky1983/array-method/array

Usage

Below are examples of how to use the main features of this package.

Filter

Function Call

Extract elements from a slice that meet a condition.

import (
    "github.com/hiroky1983/array-method/array"
)

nums := []int{1, 2, 3, 4, 5}
evens := array.Filter(nums, func(n int) bool {
    return n%2 == 0
})
// evens will be [2, 4]

Method Chaining

Use NewArray to filter with method chaining.

nums := []int{1, 2, 3, 4, 5}
evens := array.NewArray(nums).Filter(func(n int) bool {
    return n%2 == 0
})
// evens will be [2, 4]

Map

Function Call

Apply a function to each element of a slice to create a new slice.

people := []Person{
    {"Alice", 25},
    {"Bob", 30},
}
names := array.Map(people, func(p Person) string {
    return p.Name
})
// names will be ["Alice", "Bob"]

Method Chaining

people := []Person{
    {"Alice", 25},
    {"Bob", 30},
}
names := array.NewArray(people).Map(func(p Person) string {
    return p.Name
})
// names will be ["Alice", "Bob"]

Find

Function Call

Find the first element in a slice that meets a condition.

person := array.Find(people, func(p Person) bool {
    return p.Name == "Alice"
})
// person will be &{Alice 25}

Method Chaining

person := array.NewArray(people).Find(func(p Person) bool {
    return p.Name == "Alice"
})
// person will be &{Alice 25}

FindIndex

Function Call

Find the index of the first element in a slice that meets a condition.

index := array.FindIndex(people, func(p Person) bool {
    return p.Name == "Bob"
})
// index will be 1

Method Chaining

index := array.NewArray(people).FindIndex(func(p Person) bool {
    return p.Name == "Bob"
})
// index will be 1

ForEach

Function Call

Perform an action for each element in a slice.

array.ForEach(people, func(p Person) {
    fmt.Println(p.Name)
})
// Output: Alice Bob

Method Chaining

array.NewArray(people).ForEach(func(p Person) {
    fmt.Println(p.Name)
})
// Output: Alice Bob