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C# member variable initialization; best practice?
... the above, if there are other fields (not shown) with field initializers, then they are only directly initialized in the constructors that call base(...) - i.e. the public Bar(string foo) ctor. The other constructor does not run field initializers, since it knows they are done by the this(...) ctor...
Controlling a USB power supply (on/off) with Linux
...nd in the form of sudo foo > bar is parsed as direct the output to bar, then run foo using sudo. The redirection fails because it happens before you get root access. The solution is to use sudo sh -c 'echo disabled > /sys/bus/usb/devices/usb1/power/wakeup', and so on: gain root, run a new he...
Retaining file permissions with Git
...ating a git repo out of my /var/www directory . My hope was that I would then be able to push web content from our dev server to github, pull it to our production server, and spend the rest of the day at the pool.
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How do RVM and rbenv actually work?
...ctory to the front of your PATH:
export PATH="$HOME/.rbenv/shims:$PATH"
Then any time you run ruby from the command line, or run a script whose shebang reads #!/usr/bin/env ruby, your operating system will find ~/.rbenv/shims/ruby first and run it instead of any other ruby executable you may have...
How to resize a VirtualBox vmdk file
... from the list of known hard drives (File -> Virtual Media Manager) and then re-add it to the instance.
– Chaim Eliyah
Dec 14 '17 at 22:14
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How does the HyperLogLog algorithm work?
...s and keep the maximum length of a seen "00...1" prefix of each substream. Then, estimates the final value by taking the mean value of each substream.
That's the main idea of this algorithm. There are some missing details (the correction for low estimate values, for example), but it's all well writ...
What are WSDL, SOAP and REST?
...rder): So, basically we make Proxy classes based on WSDL Document.
SOAP: Then when we actually order the food based on the Menu's: Meaning we use proxy classes to call upon the service methods which is done using SOAP. :)
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How to parse Excel (XLS) file in Javascript/HTML5
...u want the simplest and tiniest way of reading an *.xlsx file in a browser then this library might do:
https://catamphetamine.github.io/read-excel-file/
<input type="file" id="input" />
import readXlsxFile from 'read-excel-file'
const input = document.getElementById('input')
input.addEve...
Google Maps API v3: How to remove all markers?
...est to keep references to all markers you have on the map in an array. And then when you want to delete em all, just loop trough the array and call .setMap(null) method on each of the references.
See this question for more info/code.
My version:
google.maps.Map.prototype.markers = new Array();
g...
Why not use exceptions as regular flow of control?
...t does correspond to bad things happening. If you have trouble with that, then how do you do logging -- don't you log by level and class, precisely so you can filter on them? Do you think that's a bad idea, too?
– Ken
Dec 11 '09 at 1:46
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