C#•6mo ago

Extension Methods

I need help understanding extension methods

5 Replies

static class Class
{
    public static void NotExtension(string s, int y) { ... }
}

// ok
Class.NotExtension("A", 100);

static class Class2
{
    public static void Extension(this string s, int y) { ... }
}

// ok
Class2.Extension("A", 100);
// also ok
"A".Extension(100); // <- this is the only difference between a regular static method and an extension method

static class Class
{
    public static void NotExtension(string s, int y) { ... }
}

// ok
Class.NotExtension("A", 100);

static class Class2
{
    public static void Extension(this string s, int y) { ... }
}

// ok
Class2.Extension("A", 100);
// also ok
"A".Extension(100); // <- this is the only difference between a regular static method and an extension method

ACiDCA7•6mo ago

meeh reflctronic was faster -.-

CykotechOP•6mo ago

So then it seems like I understand it better than I realize Exercism is just weird with how they want me to implement it.

KidKai25•6mo ago

"So if I need to supply an additional parameter, do I just add it like I would a normal method?" Yes

CykotechOP•6mo ago

Yeah nevermind they just named all the methods in the exercise similar things and I was reading the overload error wrong. I appreciate the help though. That's typically my problem though is that I don't read errors correctly :JoyGonnaAscend:

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Extension Methods