如何在Swift连接字符串?
在Objective-C中
NSString *string = @"Swift";
NSString *resultStr = [string stringByAppendingString:@" is a new Programming Language"];
or
NSString *resultStr=[NSString stringWithFormat:@"%@ is a new Programming Language",string];
但我想用swift语言来写。
当前回答
这也会起作用:
var string = "swift"
var resultStr = string + " is a new Programming Language"
其他回答
非常简单:
let StringA = "Hello"
let StringB = "World"
let ResultString = "\(StringA)\(StringB)"
println("Concatenated result = \(ResultString)")
你也可以在Swift中使用stringByAppendingFormat。
var finalString : NSString = NSString(string: "Hello")
finalString = finalString.stringByAppendingFormat("%@", " World")
print(finalString) //Output:- Hello World
finalString = finalString.stringByAppendingFormat("%@", " Of People")
print(finalString) //Output:- Hello World Of People
斯威夫特5:
数组的字符串变成一个单一的字符串
let array = ["Ramana","Meharshi","Awareness","Oneness","Enlightnment","Nothing"]
let joined = array.joined(separator: ",")
我刚从Objective-C切换到Swift(4)，我发现我经常使用:
let allWords = String(format:"%@ %@ %@",message.body!, message.subject!, message.senderName!)
在Swift 5中，apple引入了使用#符号的原始字符串。
例子:
print(#"My name is "XXX" and I'm "28"."#)
let name = "XXX"
print(#"My name is \#(name)."#)
符号#必须在\后面。常规的\(name)将被解释为字符串中的字符。
