![]() NET can also be made available on older frameworks using official compatibility packages published by Microsoft. Var str = "Hello world " // On older framworks, this is replaced by a polyfill var contains = str. ![]() These types are defined within the corresponding System.* namespaces and mimic the behavior of their original implementations as closely as possible.įor example, with PolyShim you can use the Index and Range structs (added in. PolyShim provides various types that are not available natively on older target frameworks. You can then use them in your code by referencing the corresponding types or methods as if they were defined natively. Once the package is installed, the polyfills will be automatically added to your project as internal source files.
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