Documentation
¶
Overview ¶
Package stringutils is the obligatory add-on for convenience functions related to strings.
Index ¶
- func Contract(m map[string]string, f func(string, string) string) []string
- func DefaultIf(value, defaultValue, condition string) string
- func DefaultIfEmpty(value, defaultValue string) string
- func ErrorMessages(errs []error) []string
- func Keys(m map[string]string) []string
- func MapWithDefault(m map[string]string, def string) func(string) string
- func Quote(s []string) []string
- func Transform(s []string, f func(string) string) []string
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Contract ¶
Contract takes a map[string]string and contracts pairs of key and values.
Example ¶
Contract takes a map[string]string and pipes key-value pairs through a function and returns accumulated results.
package main
import (
"fmt"
"sort"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
m := map[string]string{"key1": "value1", "key2": "value2"}
vs := stringutils.Contract(m, func(k string, v string) string { return v })
sort.Strings(vs)
fmt.Println(vs)
}
Output: [value1 value2]
func DefaultIf ¶
DefaultIf falls back to a default value if the passed value is equal to the condition parameter.
Example ¶
DefaultIf takes three strings v, d, c and returns (v != c)? v : d.
package main
import (
"fmt"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
s := stringutils.DefaultIf("xxx", "[CENSORED]", "xxx")
fmt.Println(s)
s = stringutils.DefaultIf("abc", "[CENSORED]", "xxx")
fmt.Println(s)
}
Output: [CENSORED] abc
func DefaultIfEmpty ¶
DefaultIfEmpty falls back to a default value if the passed value is empty
Example ¶
DefaultIfEmpty takes two strings v, d and returns (v != "")? v : d.
package main
import (
"fmt"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
s := stringutils.DefaultIfEmpty("my string", "<no value>")
fmt.Println(s)
s = stringutils.DefaultIfEmpty("", "<no value>")
fmt.Println(s)
}
Output: my string <no value>
func ErrorMessages ¶
ErrorMessages accumulates the error messages from slice of errors.
Example ¶
ErrorMessages extracts the messages from a slice of errors.
package main
import (
"errors"
"fmt"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
es := []error{errors.New("an_error"), errors.New("another_error")}
ms := stringutils.ErrorMessages(es)
fmt.Println(ms)
}
Output: [an_error another_error]
func Keys ¶
Keys extracts the key of a map[string]string and returns them as a slice of strings.
Example ¶
Keys extracts the keys of a map[string]string.
package main
import (
"fmt"
"sort"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
m := map[string]string{"key1": "value1", "key2": "value2"}
ks := stringutils.Keys(m)
sort.Strings(ks)
fmt.Println(ks)
}
Output: [key1 key2]
func MapWithDefault ¶
MapWithDefault provides a closure that does the regular map lookup, and defaults to the passed value no value is found.
func Quote ¶
Quote takes a slice of strings and returns a slice of strings where each element of the input is put in double quotation marks.
Example ¶
Quote puts double quotation marks around each element of a string slice.
package main
import (
"fmt"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
s := []string{"hello", "world"}
q := stringutils.Quote(s)
fmt.Println(q)
}
Output: ["hello" "world"]
func Transform ¶
Transform takes a slice of strings, transforms each element and returns a slice of strings containing the transformed values
Example ¶
Transform applies a given operation to all elements of a string slice.
package main
import (
"fmt"
"strings"
"github.com/gotohr/fritzctl/internal/stringutils"
)
func main() {
s := []string{"hello", "world"}
u := stringutils.Transform(s, strings.ToUpper)
fmt.Println(u)
}
Output: [HELLO WORLD]
Types ¶
This section is empty.
Source Files