问题

你好，可以使用Swift来计算字符串中有多少个字符。例如，如果有以下字符串：

"100,101,305,222"

你可以通过以下方式找出字符串中有多少个逗号：

let inputString = "100,101,305,222"
let commaCount = inputString.components(separatedBy: ",").count - 1

commaCount 变量将包含字符串中逗号的数量。在这个例子中，commaCount 的值将是3，因为有3个逗号在字符串中。

英文:

my question is if it is possible in Swift to count how many characters are located in a string.

For example I have the following string:

&quot;100,101,305,222&quot;

Now I want to know how many commas are in this string? Is it possible to find out in Swift?

答案1

得分: 1

"100,101,305,222"    
    .filter { $0 == "," }
    .count

这是与 [tag:Swift] 有关的内容，与 [tag:SwiftUI] 无关。

英文:

&quot;100,101,305,222&quot;    
    .filter { $0 == &quot;,&quot; }
    .count

It is [tag:Swift]. Nothing to do with the [tag:SwiftUI]

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