Git diagram for data transport commands

adminVCS0 Comment
1 min. reading

If you’re unfamiliar with data transport commands in Git or have troubles understanding the idea of four “buckets” (workspace, index, local repository and remote repository) or you’re generally a newbie to Git, then there’s a great answer at Stack Overflow, which basically is a diagram image taken from Oliver Steele’s blog and that actually explains everything! :>

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Media supported by Samsung 50HU6900 4K TV

adminhardware, media0 Comment
4 min. reading

Three months ago I have purchased my first 4K / UHD TV — Samsung 50HU6900 — and after some time I tried to used the built-in media player to play some of my files. At the very end it turned out that — as in all Samsung devices — this is a piece of crap, full of some strange limitations. Finally, I have reverted back to my old, good standalone FHD player and I’m using Samsung one only for UHD / 4K files.

But, for all of you, that aren’t so reluctant, here is a list of media supported by this TV (and probably many more Samsung TVs) and all the limitations, you need to fulfill in order to have your media played.

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Create a loop in a stored procedure to insert many rows with random data

adminSQL0 Comment
1 min. reading

A solution based on this Stack Overflow answer to insert many random data rows to given table in SQL:

TRUNCATE TABLE `devices`;

DROP PROCEDURE IF EXISTS InsertRand;

DELIMITER $$
CREATE PROCEDURE InsertRand(IN NumRows INT)
    BEGIN
        DECLARE i INT;
        SET i = 1;
        START TRANSACTION;
        WHILE i <= NumRows DO
            SET @dn = CONV(FLOOR(RAND() * 99999999999999), 20, 36);
            INSERT INTO `devs` VALUES (NULL, FLOOR((RAND() * 3)), CONCAT('Dev ', @dn));
            SET i = i + 1;
        END WHILE;
        COMMIT;
    END$$
DELIMITER;

To execute this little piece just call:

CALL InsertRand(77);

That’s all folks! :>