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Trim从字符串的开头和结尾剪切空白(或其他字符)。 可选参数characterMask指定额外剥离的字符。 Trim(str string, characterMask ...string) string
func ExampleTrim() {
	var (
		str           = `*Hello World*`
		characterMask = "*"
		result        = gstr.Trim(str, characterMask)
	)
	fmt.Println(result)
	// Output:
	// Hello World
}
TrimStr从字符串的开头和结尾去掉所有cut字符串(不会删除开头或结尾的空白)。   TrimStr(str string, cut string, count ...int) string
func ExampleTrimStr() {
	var (
		str    = `Hello World`
		cut    = "World"
		count  = -1
		result = gstr.TrimStr(str, cut, count)
	)
	fmt.Println(result)
	// Output:
	// Hello
}
TrimLeft将字符串开头的空格(或其他字符)删除。   TrimLeft(str string, characterMask ...string) string
func ExampleTrimLeft() {
	var (
		str           = `*Hello World*`
		characterMask = "*"
		result        = gstr.TrimLeft(str, characterMask)
	)
	fmt.Println(result)
	// Output:
	// Hello World*
}
TrimLeftStr从字符串的开头删除count个cut字符串(不会删除开头的空格)。   TrimLeftStr(str string, cut string, count ...int) string
func ExampleTrimLeftStr() {
	var (
		str    = `**Hello World**`
		cut    = "*"
		count  = 1
		result = gstr.TrimLeftStr(str, cut, count)
	)
	fmt.Println(result)
	// Output:
	// *Hello World**
}
TrimRight从字符串的末尾去掉空白(或其他字符)。   TrimRight(str string, characterMask ...string) string
func ExampleTrimRight() {
	var (
		str           = `**Hello World**`
		characterMask = "*def" // []byte{"*", "d", "e", "f"}
		result        = gstr.TrimRight(str, characterMask)
	)
	fmt.Println(result)
	// Output:
	// **Hello Worl
}
TrimRightStr从字符串的尾部删除count个cut字符串(不会删除尾部的空格)。   TrimRightStr(str string, cut string, count ...int) string
func ExampleTrimRightStr() {
	var (
		str    = `Hello World!`
		cut    = "!"
		count  = -1
		result = gstr.TrimRightStr(str, cut, count)
	)
	fmt.Println(result)
	// Output:
	// Hello World
}
TrimAll删除字符串str中的所有空格(或其他字符)以及characterMask字符。 TrimAll(str string, characterMask ...string) string
func ExampleTrimAll() {
	var (
		str           = `*Hello World*`
		characterMask = "*"
		result        = gstr.TrimAll(str, characterMask)
	)
	fmt.Println(result)
	// Output:
	// HelloWorld
}
HasPrefix返回s是否以prefix开头。 HasPrefix(s, prefix string) bool
func ExampleHasPrefix() {
	var (
		s      = `Hello World`
		prefix = "Hello"
		result = gstr.HasPrefix(s, prefix)
	)
	fmt.Println(result)
	// Output:
	// true
}
HasSuffix返回s是否以suffix 结束。 HasSuffix(s, suffix string) bool
func ExampleHasSuffix() {
	var (
		s      = `my best love is GOframe`
		prefix = "GoFrame"
		result = gstr.HasSuffix(s, prefix)
	)
	fmt.Println(result)
	// Output:
	// true
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