C#•3mo ago

Better way to check a list of characters?

There has to be a better way than doing this

myWord == "-" || myWord == "~" || myWord == "—"...

myWord == "-" || myWord == "~" || myWord == "—"...

I also don't really want to make a array and have to loop through them all because that seems like code would pile up quickly. I'm hoping for a function that does what I'm looking for?

6 Replies

Angius•3mo ago

new[]{"a", "b", "c", "d"}.Contains(myWord)

new[]{"a", "b", "c", "d"}.Contains(myWord)

Or you could make an extension method or something, say

public static class StringExtensions
{
    public static bool IsAnyOf(this string needle, params string[] haystack)
    {
        return haystack.Contains(needle);
    }
}

public static class StringExtensions
{
    public static bool IsAnyOf(this string needle, params string[] haystack)
    {
        return haystack.Contains(needle);
    }
}

used with

myWord.IsAnyOf("a", "b", "c", "d")

myWord.IsAnyOf("a", "b", "c", "d")

333fred•3mo ago

myWord is "-" or "~" or ...

Angius•3mo ago

Duh, of course, how could I forget about pattern matching...

LPeter1997•3mo ago

If all single letter, "-~—…”.Contains(letter)

TizzyT•3mo ago

If you are trying see if a string contains any of the characters you specify then:

string charList = "-~—"; // the 3 chars from your example
myWord.Any(c => charList.contains(c));

string charList = "-~—"; // the 3 chars from your example
myWord.Any(c => charList.contains(c));

jcotton42•3mo ago

Note this only works with constants, unfortunately.

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Better way to check a list of characters?