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f64s_example_test.go
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f64s_example_test.go
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// Copyright ©2020 The go-hep Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package f64s_test
import (
"fmt"
"go-hep.org/x/hep/sliceop/f64s"
)
// An example of slice filtering
func ExampleFilter() {
slice := []float64{1, 2, -99, 4, 5, -99, 7}
condition := func(x float64) bool { return x > 0 }
fmt.Println(f64s.Filter(nil, slice, condition))
// Output:
// [1 2 4 5 7]
}
// An example of slice mapping
func ExampleMap() {
slice := []float64{1, 2, -99, 4, 5, -99, 7}
operation := func(x float64) float64 { return x * x }
fmt.Println(f64s.Map(nil, slice, operation))
// Output:
// [1 4 9801 16 25 9801 49]
}
// An example of slice finding
func ExampleFind() {
slice := []float64{1, 2, -99, 4, 5, -99, 7}
condition := func(x float64) bool { return x == -99 }
fmt.Println(f64s.Find(nil, slice, condition))
// Output:
// [2 5]
}
// An example of taking a sub-slice defined by indices
func ExampleTake() {
slice := []float64{1, 2, -99, 4, 5, -99, 7}
indices := []int{2, 5}
fmt.Println(f64s.Take(nil, slice, indices))
// Output:
// [-99 -99]
}