# isScheme method

bool isScheme (String scheme)

Whether the scheme of this Uri is `scheme`.

The `scheme` should be the same as the one returned by Uri.scheme, but doesn't have to be case-normalized to lower-case characters.

Example:

    var uri = Uri.parse("http://example.com/");
    print(uri.isScheme("HTTP"));  // Prints true.

A `null` or empty `scheme` string matches a URI with no scheme (one where hasScheme returns false).

## Implementation

    bool isScheme(String scheme);