Documentation
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Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Map ¶
func Map[ K comparable, V any, IK comparable, IV any, FN mapperFunc[K, V, IK, IV], ](s map[IK]IV, fn FN) (map[K]V, error)
Map will do a mapping from an input type into an output type.
Example ¶
package main
import (
"fmt"
"go.llib.dev/frameless/pkg/mapkit"
"strings"
)
func main() {
var x = map[string]string{"a": "x", "b": "y", "c": "z"}
x = mapkit.Must(mapkit.Map[string, string](x,
func(k string, v string) (string, string) { return k, strings.ToUpper(v) }))
fmt.Printf("%#v\n", x) // map[string]string{"a": "X", "b": "Y", "c": "Z"}
}
Example (WithError) ¶
package main
import (
"fmt"
"go.llib.dev/frameless/pkg/mapkit"
"strconv"
)
func main() {
var x = map[string]string{"a": "1", "b": "2", "c": "3"}
mx, err := mapkit.Map[string, int](x, func(k, v string) (string, int, error) {
cv, err := strconv.Atoi(v)
return k, cv, err
})
if err != nil {
panic("handle error")
}
fmt.Printf("%#v\n", mx) // map[string]int{"a": 1, "b": 2, "c": 3}
}
func Must ¶
Example ¶
package main
import (
"fmt"
"go.llib.dev/frameless/pkg/mapkit"
)
func main() {
var x = map[string]int{"A": 1, "B": 2, "C": 3}
x = mapkit.Must(mapkit.Map[string, int](x,
func(k string, v int) (string, int) { return k, v * 2 }))
v := mapkit.Must(mapkit.Reduce[int](x, 42,
func(output int, k string, v int) int { return output + v }))
fmt.Println("result:", v)
}
func Reduce ¶
func Reduce[ O any, K comparable, V any, FN reducerFunc[O, K, V], ](s map[K]V, initial O, fn FN) (O, error)
Reduce goes through the map value, combining elements using the reducer function.
Example ¶
package main
import (
"fmt"
"go.llib.dev/frameless/pkg/mapkit"
)
func main() {
var x = map[string]int{"a": 1, "b": 2, "c": 3}
got, err := mapkit.Reduce[int](x, 0, func(o int, k string, v int) int {
return o + v
})
if err != nil {
panic(err)
}
fmt.Println(got) // "|abc"
}
Types ¶
This section is empty.
Source Files
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