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How to define a custom ORDER BY order in mySQL
...hros in the table definition, you specify it as an ENUM instead of VARCHAR etc. Internally MySQL stores the ENUM options in a specific order and indexes them, and so when ordering by an ENUM column specifically it will use that internal index instead of the string values ( unless CAST() is used to ...
Type.GetType(“namespace.a.b.ClassName”) returns null
...Is this a 'trick' or an actual method? I can't find this in documentation -_- . By the way, it ends my 1 week suffer! thanks
– DnR
Dec 29 '14 at 2:41
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Is the creation of Java class files deterministic?
...n efficient "online update" of our application for which users would only fetch modified JARs from the website. I can create identical JARs having identical class files as input. But the question is whether class files are always identical when compiled from the same source files. Our whole concept ...
Python List vs. Array - when to use?
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Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently ...
How do MySQL indexes work?
... lower, middle and top
3: Is higher or lower? Jump to middle point again, etc.
Using that logic, you can find an element in a sorted list in about 7 steps, instead of checking every item.
Obviously there are complexities, but that gives you the basic idea.
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PHP expects T_PAAMAYIM_NEKUDOTAYIM?
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Not really. Test this var_dump(empty(TRUE))
– machineaddict
Jun 5 '14 at 13:12
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Installing specific package versions with pip
I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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UICollectionView's cellForItemAtIndexPath is not being called
...ctionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
was not being called was because of the itemSize for the collectionViewFlowLayout's height was too big.
[self.myCollectionViewFlowLayout setItemSize:CGSizeMake(320, 548)];
If I change the height to 410, it will execute cellForItemAtIndex...
Are nested span tags OK in XHTML?
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SPAN can contain only inline elements, such as SPAN etc.
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How to update a plot in matplotlib?
...ide your for loop, just before you call graph1.plot(...), graph2.plot(...) etc...
– Joe Kington
Nov 4 '10 at 18:49
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