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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
..., and will speed sorts up slightly.
UPDATE: utf8mb4/utf8mb4_unicode_ci is now the preferred character set/collation method. utf8_general_ci is advised against, as the performance improvement is negligible. See https://stackoverflow.com/a/766996/1432614
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Why does HTML think “chucknorris” is a color?
...0c00000000, all other characters become 0 and c remains where they are...
Now they get divided by 3 for RGB(red, green, blue)... R: c00c, G: 0000, B:0000...
But we know valid hexadecimal for RGB is just 2 characters, means R: c0, G: 00, B:00
So the real result is:
bgcolor="#c00000";
I also add...
XML attribute vs XML element
...TA tags around this data. I would say, only use attributes when you 100% know what values are going to put in there, eg, a integer or a date, probably anything that is computer generated. If the BarCode was generated by a human then it should not be an attribute.
– John Ballin...
What's the Hi/Lo algorithm?
...and a "low" number. A client can basically increment the "high" sequence, knowing that it can then safely generate keys from the entire range of the previous "high" value with the variety of "low" values.
For instance, supposing you have a "high" sequence with a current value of 35, and the "low" n...
Multiprocessing vs Threading Python [duplicate]
...ing to understand the advantages of multiprocessing over threading . I know that multiprocessing gets around the Global Interpreter Lock, but what other advantages are there, and can threading not do the same thing?
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Why doesn't Java Map extend Collection?
...ven key
maps to, nor can you delete the entry
for a given key without knowing what
value it maps to.
Collection could be made to extend
Map, but this raises the question:
what are the keys? There's no really
satisfactory answer, and forcing one
leads to an unnatural interface.
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Google Play Services Library update and missing symbol @integer/google_play_services_version
...sion of Google Play Services ( v4.0, released on Halloween 2013 ), you are now supposed to add a new tag into the AndroidManifest.xml file.
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“unadd” a file to svn before commit
...roperties was included. I've got about 100 uploaded binary files versioned now, but I haven't committed yet.
5 Answers
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Is there a Java equivalent to C#'s 'yield' keyword?
I know there is no direct equivalent in Java itself, but perhaps a third party?
6 Answers
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UPDATE multiple tables in MySQL using LEFT JOIN
... same can be applied to a scenario where the data has been normalized, but now you want a table to have values found in a third table. The following will allow you to update a table with information from a third table that is liked by a second table.
UPDATE t1
LEFT JOIN
t2
ON
t2.some_id = t1.s...