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Performing regex Queries with pymongo
...ored at the start (ie: starting with ^) are able to use indexes in the db, and will run much faster in that case.
– drevicko
Aug 13 '13 at 23:31
1
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How do you specify the date format used when JAXB marshals xsd:dateTime?
...ery difficult to reproduce in normal testing, but under load could happen, and would be exceedingly difficult to diagnose. It's better to create a new SimpleDateFormat with marshal and unmarshal (but use a static format string if necessary).
– Colselaw
Feb 28 '...
Has anyone ever got a remote JMX JConsole to work?
...tion for this:
If your Java process is running on Linux behind a firewall and you want to start JConsole / Java VisualVM / Java Mission Control on Windows on your local machine to connect it to the JMX Port of your Java process.
You need access to your linux machine via SSH login. All Communicatio...
git branch -d gives warning
Just want to get a better understanding of the warning message after I deleted a local branch
4 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
... solution. It's not always easy to convert regexps this way. On the other hand, this solution doesn't depend on top-level programming language ;)
– Konstantin
Mar 21 '18 at 12:43
...
HashSet vs. List performance
...be better off using a List<T>.
I did a test for this on my machine, and, well, it has to be very very small to get an advantage from List<T>. For a list of short strings, the advantage went away after size 5, for objects after size 20.
1 item LIST strs time: 617ms
1 item HASHSET strs t...
Add new row to dataframe, at specific row-index, not appended?
...1 2 3 4
41 4 9 14 19
5 5 10 15 20
(Note we index r differently).
And finally, benchmarks:
library(microbenchmark)
microbenchmark(
rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
insertRow(existingDF,newrow,r)
)
Unit: microseconds
...
Unix shell script to truncate a large file
...an application when it reaches say 3GB of space. I know that the below command would do it :
4 Answers
...
CSS text-overflow: ellipsis; not working?
... Width in % (percentage) won't work.
The element must have overflow:hidden and white-space:nowrap set.
The reason you're having problems here is because the width of your a element isn't constrained. You do have a width setting, but because the element is set to display:inline (i.e. the default) i...
How to add additional fields to form before submit?
Is there a way to use javascript and JQuery to add some additional fields to be sent from a HTTP form using POST?
6 Answers...