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string.go
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string.go
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// Copyright (c) 2023 IBM Corp.
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http:https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package string
import (
"fmt"
"strings"
F "github.com/IBM/fp-go/function"
O "github.com/IBM/fp-go/ord"
)
var (
// ToUpperCase converts the string to uppercase
ToUpperCase = strings.ToUpper
// ToLowerCase converts the string to lowercase
ToLowerCase = strings.ToLower
// Ord implements the default ordering for strings
Ord = O.FromStrictCompare[string]()
)
func Eq(left string, right string) bool {
return left == right
}
func ToBytes(s string) []byte {
return []byte(s)
}
func IsEmpty(s string) bool {
return len(s) == 0
}
func IsNonEmpty(s string) bool {
return len(s) > 0
}
func Size(s string) int {
return len(s)
}
// Includes returns a predicate that tests for the existence of the search string
func Includes(searchString string) func(string) bool {
return F.Bind2nd(strings.Contains, searchString)
}
// Equals returns a predicate that tests if a string is equal
func Equals(other string) func(string) bool {
return F.Bind2nd(Eq, other)
}
// Format applies a format string to an arbitrary value
func Format[T any](format string) func(t T) string {
return func(t T) string {
return fmt.Sprintf(format, t)
}
}