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Extract subset of key-value pairs from Python dictionary object?
...works in 2.7 too):
{k: bigdict[k] for k in ('l', 'm', 'n')}
Update: As Håvard S points out, I'm assuming that you know the keys are going to be in the dictionary - see his answer if you aren't able to make that assumption. Alternatively, as timbo points out in the comments, if you want a key tha...
Convert pandas dataframe to NumPy array
... columns, but as_matrix was at least one of them!
– Jérémie
Jul 31 '19 at 23:50
1
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CSS Font Border?
...nswered Nov 24 '10 at 17:42
Narcélio FilhoNarcélio Filho
10.8k11 gold badge1717 silver badges1212 bronze badges
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How to make execution pause, sleep, wait for X seconds in R?
...(x)
{
p1 <- proc.time()
Sys.sleep(x)
proc.time() - p1 # The cpu usage should be negligible
}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
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Is there a way to get rid of accents and convert a whole string to regular letters?
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I have an objection to this solution. Imagine input "æøåá". Current flattenToAscii creates result "aa.." where dots represent \u0000. That is not good. First question is - how to represent "unnormalizable" characters? Let's say it will be ?, or we can leave NULL char there, but...
What is the difference between a thread and a fiber?
.... This also means that the operating system can take advantage of multiple CPUs and CPU cores by running more than one thread at the same time and leaving it up to the developer to guard data access.
With fibers: the current execution path is only interrupted when the fiber yields execution (same n...
Unicode equivalents for \w and \b in Java regular expressions?
...regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
3 Answers
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Compression/Decompression string with C#
...ut only for UTF8-based things. If you add in, say, Swedish characters like åäö to the string value you're serialize/deserializing it will fail a round-trip test :/
– bc3tech
Aug 21 '19 at 12:32
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Performance differences between debug and release builds
... method. This is a big one, it makes property accessors essentially free.
CPU register allocation. Local variables and method arguments can stay stored in a CPU register without ever (or less frequently) being stored back to the stack frame. This is a big one, notable for making debugging optimiz...
Visual Studio 64 bit?
... for the built in version and standalone. You have to target "x86" or "Any CPU" so that you can see your xaml, then retarget 64 so you can run and debug. Ditto edit and continue. The list goes on. It is so totally not awesome, I do not have words fit to print.
– Dirk Bester
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