平时写程序时经常要记录下日志，C++的cout类很好用吧，呵呵，
以前写了个类似的类 来记录下程序的运行日志
-peacetime procedures often write to record log, the cout Class C with a good bar, Oh, previously wrote a similar category to record the procedures under the operation log
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001073s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.087397s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.007140s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.007268s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.003453s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003160s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000809s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003629s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016760s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001039s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 57967 [ RunTime:0.011490s ]
