{{alias}}( value )
    Tests if a value is a URI.

    Parameters
    ----------
    value: any
        Value to test.

    Returns
    -------
    bool: boolean
        Boolean indicating whether value is a URI.

    Examples
    --------
    > var bool = {{alias}}( 'http://google.com' )
    true
    > bool = {{alias}}( 'http://localhost/' )
    true
    > bool = {{alias}}( 'http://example.w3.org/path%20with%20spaces.html' )
    true
    > bool = {{alias}}( 'ftp://ftp.is.co.za/rfc/rfc1808.txt' )
    true

    // No scheme:
    > bool = {{alias}}( '' )
    false
    > bool = {{alias}}( 'foo@bar' )
    false
    > bool = {{alias}}( '://foo/' )
    false

    // Illegal characters:
    > bool = {{alias}}( 'http://<foo>' )
    false

    // Invalid path:
    > bool = {{alias}}( 'http:////foo.html' )
    false

    // Incomplete hex escapes:
    > bool = {{alias}}( 'http://example.w3.org/%a' )
    false

    See Also
    --------