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tips


  • Syncing only unique content with MySQL
    05/20/13

    An fast and easy way to get just the unique lines in one file, which are not in another one.

    $ cat file1
    UPDATE `table_name` SET `column1`='1', `column2`='2' where `id`='1';
    UPDATE `table_name` SET `column1`='1', `column2`='3' wh...

  • Validating XHTML with RDFa and Facebook like button
    05/06/12

    If you are trying to validate a XHTML+RDFa page with W3C's validator tool you'll receive an error stating that iframes are not compatible with the <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"> doctype.