Programming-Idioms

Edit summary for version 33 by programming-idioms.org:
[Go] Fix comments: generics are coming

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2022-02-01, 22:40:35

2022-08-19, 11:27:24

Idiom #222 Find the first index of an element in list

Set i to the first index in list items at which the element x can be found, or -1 if items does not contain x.

Set i to the first index in list items at which the element x can be found, or -1 if items does not contain x.

i,x,items

i,x,items

position

position

i := -1
for j, e := range items {
	if e == x {
		i = j
		break
	}
}

i := -1
for j, e := range items {
	if e == x {
		i = j
		break
	}
}

There is no generic func for this, consider an explicit loop in your own strongly typed helper func.

Explicit loop, for your own strongly typed helper func.

https://play.golang.org/p/Z6F5vjMdluW

https://play.golang.org/p/Z6F5vjMdluW

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