my extensions 101
Can somebody post (or link to) and example of something that was implemented in my extension?
Comments
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My Extensions:
void Main() { // Write code to test your extensions here. Press F5 to compile and run. } public static class MyExtensions { // Write custom extension methods here. They will be available to all queries. public static int Sum(int a, int b) { return a + b; } } // You can also define non-static classes, enums, etc.
Query (Move 'using' directory into Query Properties: Yes):using static MyExtensions; Sum(1, 2).Dump();
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Simple example:
public static class MyExtensions { public static bool Contains (this string s, string value, bool ignoreCase) => s.IndexOf (value, ignoreCase ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal) > -1; }To use:"FOO".Contains ("oo", true).Dump(); // case-insensitive
Another example:public static class MyExtensions { public static bool IsNumeric (this Type t) { if (t == null) return false; t = t.CollapseNullable(); if (t == typeof (decimal)) return true; if (!t.IsPrimitive) return false; return t != typeof (char) && t != typeof (bool); } public static Type CollapseNullable (this Type t) { if (t == null) return null; bool nullable = t.IsGenericType && t.GetGenericTypeDefinition () == typeof (Nullable<>); if (nullable) t = t.GetGenericArguments () [0]; return t; } } … typeof (int).IsNumeric().Dump(); // true typeof (float?).IsNumeric().Dump(); // true typeof (char).IsNumeric().Dump(); // false -
Thanks for showing *actual* extensions methods
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Many thanks.
