github.com/enetx/g@v1.0.80/examples/iter/iter_count.go (about)

     1  package main
     2  
     3  import (
     4  	"github.com/enetx/g"
     5  	"github.com/enetx/g/f"
     6  )
     7  
     8  func main() {
     9  	a := g.SliceOf(1, 2, 3)
    10  	println(a.Iter().Count()) // 3
    11  
    12  	a = g.SliceOf(1, 2, 3, 4, 5)
    13  	println(a.Iter().Count()) // 5
    14  
    15  	a = g.SliceOf(1, 2, 4, 3, 4, 5, 4, 1, 1, 4, 4)
    16  
    17  	println(a.Iter().Filter(f.Eq(4)).Count()) // 5
    18  	// println(a.Iter().Filter(func(i int) bool { return i == 4 }).Count()) // 5
    19  }