Creates an AttrPair from an Attr and a value of type T, if there is an AttrValue of the correct type.
the name of this particular attribute
an XML Namespace that this attribute lives in
all Attrs are checked to fail fast if their names are invalid XML attrs; flagging them as raw disables the checks in the few cases you actually want invalid XML attrs (e.
Wraps up a HTML attribute in a value which isn't a string.
the name of this particular attribute
an XML Namespace that this attribute lives in
all Attrs are checked to fail fast if their names are invalid XML attrs; flagging them as raw disables the checks in the few cases you actually want invalid XML attrs (e.g. AngularJS)