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What's the difference between TRUNCATE and DELETE in SQL
...commit anyway.
However, see Flashback below.
Space reclamation
Delete does not recover space, Truncate recovers space
Oracle
If you use the REUSE STORAGE clause then the data segments are not de-allocated, which can be marginally more efficient if the table is to be reloaded with data. The hi...
Does python have an equivalent to Java Class.forName()?
...can help you find a more pythonic way of doing it.
Here's a function that does what you want:
def get_class( kls ):
parts = kls.split('.')
module = ".".join(parts[:-1])
m = __import__( module )
for comp in parts[1:]:
m = getattr(m, comp)
return m
You can u...
What does jQuery.fn mean?
What does the fn here mean?
4 Answers
4
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Really killing a process in Windows
...p the task manager and hit the "End Process" button for it. However, this doesn't always work; if I try it enough times then it'll usually die eventually, but I'd really like to be able to just kill it immediately. On Linux I could just kill -9 to guarantee that a process will die.
...
How does push notification technology work on Android?
How has Google implemented their push notification feature? Does it work through polling done by a service running in the background or in a different way?
...
How does MySQL process ORDER BY and LIMIT in a query?
... production environment, but now when I bench marked it, the extra sorting does not impact the performance.
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What does multicore assembly language look like?
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This doesn't answer the question of where the threads come from. Cores and processors is a hardware thing, but somehow threads must be created in software. How does the primary thread know where to send the SIPI? Or does the SI...
What is polymorphism, what is it for, and how is it used?
...of the letter p although, now that I've had to explain the joke, even that doesn't seem funny either.
Sometimes, you should just quit while you're behind :-)
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How does __proto__ differ from constructor.prototype?
...diagram of __proto__ and prototype references, unfortunately stackoverflow does not allow me to add the image with "less than 10 reputation". Maybe some other time.
[Edit]
The figure uses [[Prototype]] instead of __proto__ because that is how ECMAScript specification refers to internal objects. I h...
How can I verify if one list is a subset of another?
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The performant function Python provides for this is set.issubset. It does have a few restrictions that make it unclear if it's the answer to your question, however.
A list may contain items multiple times and has a specific order. A set does not. Additionally, sets only work on hashable objec...