是否可以使用C＃初始化语法来传递参数？

Question

In C#, using the initialization syntax I can say:

string[] mystrings = {"one", "two", "three"};

Is it possible to use the same array initialization syntax to convert this:

string test = "This is a good sentance to split, it has at least one split word to split on.";
string[] mystrings = test.Split(new string[] { "split" }, StringSplitOptions.RemoveEmptyEntries);

Into something like this:

string test = "This is a good sentance to split, it has at least one split word to split on.";
string[] mystrings = test.Split({ "split" }, StringSplitOptions.RemoveEmptyEntries);

It seems like it should work but I can't get it to do anything.

Answer 1

Almost there:

string[] mystrings = test.Split(new[]{ "split" }, 
    StringSplitOptions.RemoveEmptyEntries);

Answer 2

Looks like you need a new string method:

public static class StringExtensions {
  public static string[] Split(this string self, string separator, StringSplitOptions options) {
    return self.Split(new[] { separator }, options);
  }
}

Use it like this:

string[] mystrings = test.Split("split", StringSplitOptions.RemoveEmptyEntries);

Now, it's up to you to decide if it's worth or not to introduce it.

For multiple separators, you can fix the options parameter (or put it in front, which will feel unnatural based on the other "overloads"):

public static class StringExtensions {
  // maybe just call it Split
  public static string[] SplitAndRemoveEmptyEntries(this string self, params string[] separators) {
    return self.Split(separators, StringSplitOptions.RemoveEmptyEntries);
  }
}

And the usage:

string[] mystrings = test.SplitAndRemoveEmptyEntries("banana", "split"); 

Answer 3

You can certainly have this syntax:

string test = "This is a good sentance to split, it has at least one split word to split on.";
string[] mystrings = test.Split(new[] { "split" }, StringSplitOptions.RemoveEmptyEntries);

but I am not sure if you can simplify it any further...

Answer 4

You could add an extension method:

    public static String[] Split(this string myString, string mySeperator, StringSplitOptions options)
    {
        return myString.Split(new[] {mySeperator}, options);
    }

Then you can do:

    string test = "This is a good sentance to split, it has at least one split word to split on.";
    string[] mystrings = test.Split("split", StringSplitOptions.RemoveEmptyEntries);