我正在寻找一种方法来取代字符在一个Swift字符串。
示例:“This is my string”
我想用“+”替换“”以获得“This+is+my+string”。
我怎样才能做到这一点呢?
当前回答
我实现了这个非常简单的func:
func convap (text : String) -> String {
return text.stringByReplacingOccurrencesOfString("'", withString: "''")
}
所以你可以这样写:
let sqlQuery = "INSERT INTO myTable (Field1, Field2) VALUES ('\(convap(value1))','\(convap(value2)')
其他回答
斯威夫特4:
let abc = "Hello world"
let result = abc.replacingOccurrences(of: " ", with: "_",
options: NSString.CompareOptions.literal, range:nil)
print(result :\(result))
输出:
result : Hello_world
我实现了这个非常简单的func:
func convap (text : String) -> String {
return text.stringByReplacingOccurrencesOfString("'", withString: "''")
}
所以你可以这样写:
let sqlQuery = "INSERT INTO myTable (Field1, Field2) VALUES ('\(convap(value1))','\(convap(value2)')
你测试过这个吗?
var test = "This is my string"
let replaced = test.stringByReplacingOccurrencesOfString(" ", withString: "+", options: nil, range: nil)
这在swift 4.2中很容易做到。只需使用replacingOccurrences(of: " "， with: "_")进行替换
var myStr = "This is my string"
let replaced = myStr.replacingOccurrences(of: " ", with: "_")
print(replaced)
修改现有可变字符串的类别:
extension String
{
mutating func replace(originalString:String, withString newString:String)
{
let replacedString = self.stringByReplacingOccurrencesOfString(originalString, withString: newString, options: nil, range: nil)
self = replacedString
}
}
使用:
name.replace(" ", withString: "+")
