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What is the most efficient Java Collections library? [closed]
...ding a lot of functionality over the normal collections in the JDK.
Personally (and I'm biased) I love Guava (including the former Google Java Collections project). It makes various tasks (including collections) a lot easier, in a way which is at least reasonably efficient. Given that collection op...
How to replace a character by a newline in Vim
...s a newline (more precisely, it’s treated as the input CR). Here’s a small, non-interactive example to illustrate this, using the Vim command line feature (in other words, you can copy and paste the following into a terminal to run it). xxd shows a hexdump of the resulting file.
echo bar > te...
What's the difference between Perl's backticks, system, and exec?
...It never returns true, because if the command is found it never returns at all.
There is also no point in returning STDOUT, STDERR or exit status of the command.
You can find documentation about it in perlfunc,
because it is a function.
system
executes a command and your Perl script is con...
How to exit pdb and allow program to continue?
...b module to debug a program. I'd like to understand how I can exit pdb and allow the program to continue onward to completion. The program is computationally expensive to run, so I don't want to exit without the script attempting to complete. continue doesn't seems to work. How can I exit pdb and ...
How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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Java JDBC - How to connect to Oracle using Service Name instead of SID
...elped me resolve the issue I was struggling with for days. I looked around all over the internet until I found the answered by Jim Tough on May 18 '11 at 15:17. With that answer I was able to connect. Now I want to give back and help others with a complete example. Here goes:
import java.sql.*;
p...
How to use MDC with thread pools?
....util.Timer classes along with some self-rolled async execution services. All these services manage their own thread pool.
...
How to fix SSL certificate error when running Npm on Windows?
When I try to install a package with npm, it doesn't work. After a long wait, I eventually get an error 'tunneling socket could not be established, sutatusCode=403'.
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JSON Stringify changes time of date because of UTC
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thanks... I actually found a great library here, blog.stevenlevithan.com/archives/date-time-format all you need to do this (maybe it will help you) , you pass false and it doesn't convert. var something = dateFormat(myStartDate, "isoDateTi...
How to copy a selection to the OS X clipboard
...xists only for X11 (unless you build vim with +X11 support, which will install a X11 server XQuartz in OS X), while OS X doesn't use X11 as its windows system.
– nn0p
Nov 27 '16 at 18:20
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