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MySQL: multiple tables or one table with many columns?
... better (since it reduces the amount of work the database needs to do when reading data). I'd highly recommend making your data as normalized as possible to start out, and only denormalize if you're aware of performance problems in specific queries.
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Greenlet Vs. Threads
...uns in its own context, you can continue to use synchronous APIs without threading. This is good because threads are very expensive in terms of virtual memory and kernel overhead, so the concurrency you can achieve with threads is significantly less. Additionally, threading in Python is more expensi...
Is there a Max function in SQL Server that takes two values like Math.Max in .NET?
... for NULL values. If you simply modify the final line: "return @value2" to read as: "return isnull(@val2,@val1)" then if one of the values is null the function will return the not null value, otherwise it will work as normal
– kristof
Sep 24 '08 at 10:32
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ImportError: No module named Crypto.Cipher
...
That's not correct, read a bit here: pycryptodome.readthedocs.io/en/latest/src/…
– Igor Micev
May 16 at 20:13
add a co...
What's the best way to detect a 'touch screen' device using JavaScript?
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Update: Please read blmstr's answer below before pulling a whole feature detection library into your project. Detecting actual touch support is more complex, and Modernizr only covers a basic use case.
Modernizr is a great, lightweight way...
Update one MySQL table with values from another
...x for joins rather than multiple 'WHERE' conditions, I think its easier to read
As for running slow, how large are the tables? You should have indexes on tobeupdated.value and original.value
EDIT:
we can also simplify the query
UPDATE tobeupdated
INNER JOIN original USING (value)
SET tobeupdated...
How to have git log show filenames like svn log -v
...tes long paths; width is configurable but wrapped histograms are harder to read. Other formats like --numstat always print full paths.
– Beni Cherniavsky-Paskin
Nov 20 '19 at 10:14
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How do I remove files saying “old mode 100755 new mode 100644” from unstaged changes in Git?
...it attempts to do so it doesn't work (or at least not in a way that it can read). When it then reads back the status of those files it looks like the executable bit has been deliberately unset. Setting core.filemode to false tells git to ignore any executable bit changes on the filesystem so it won'...
How to store custom objects in NSUserDefaults
... = [decoder decodeObjectForKey:@"subcategory"];
}
return self;
}
Reading and writing from NSUserDefaults:
- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {
NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
NSUserDefaults *defaults = [NSUs...
Git Server Like GitHub? [closed]
I am a long time Subversion user that is going to try Git. I have read some about it and understand the distributed nature - I can see a lot of the benefits.
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