Programming-Idioms

Edit summary for version 29 by :
[Go]Fixed alloc len/cap, +new demo URL

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2015-12-08, 21:32:53

2015-12-08, 21:34:21

Idiom #57 Filter list

Create list y containing items from list x satisfying predicate p. Respect original ordering. Don't modify x in-place.

Create list y containing items from list x satisfying predicate p. Respect original ordering. Don't modify x in-place.

y := make([]T, len(x))
for _, v := range x{
	if p(v){
		y = append(y, v)
	}
}

y := make([]T, 0, len(x))
for _, v := range x{
	if p(v){
		y = append(y, v)
	}
}

For item type T.

For item type T.

http://play.golang.org/p/DmmgjHXb-F

http://play.golang.org/p/QTg6RZFtp7

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