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why is there a "?" in the beginning of an xml document
Joined: Sep 28, 2009
May 11, 2011 18:16:33
Was just wondering.. is there any logical reason for the "?" at the beginning of an xml document?
<?xml version="1.0 encoding="some_encoding">
Author and all-around good cowpoke
Joined: Mar 22, 2000
May 12, 2011 08:38:24
That is the format required by the standard. One function is to tell the parser that the < does not start a normal tag.
See also the use of special characters in the format for comments and DOCTYPE declarations.
Joined: Jan 18, 2011
May 12, 2011 10:58:14
Read carefully: <? opening tag, ?> closing tag. The simple line contains already two mistakes (another is version, a genuine typo, possibly).
It is sorta covered in the
JavaRanch Style Guide
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