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How do BitTorrent magnet links work?
... thing it needs to is find other peers who are downloading the torrent. It does this using a separate peer-to-peer network2 operating a "distributed hash table" (DHT). A DHT is a big distributed index which maps torrents (identified by infohashes) to lists of peers (identified by IP address and port...
Matching an empty input box using CSS
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@TricksfortheWeb It does seem to require a placeholder attribute (with a value) to be present in the input tag. Tested in Chrome - not sure if this counts for all browsers.
– Berend
Mar 17 '17 at 6:23
...
'heroku' does not appear to be a git repository
... is no remote named Heroku. When you do a Heroku create, if the git remote doesn’t already exist, we automatically create one (assuming you are in a git repo). To view your remotes type in:
“git remote -v”. # For an app called ‘appname’ you will see the following:
$ git remote -v
heroku ...
What does extern inline do?
...rsion, though it might generate a file static one. The one-definition rule does not apply, since there is never an emitted external symbol nor a call to one.
C99 (or GNU99):
inline: like GNU89 "extern inline"; no externally visible function is emitted, but one might be called and so must exist
e...
Where does this come from: -*- coding: utf-8 -*-
...ost-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f4872007%2fwhere-does-this-come-from-coding-utf-8%23new-answer', 'question_page');
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What does “S3 methods” mean in R?
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So according to your answer, does this means that median is an S3 method and print is not an S3 (maybe S4)?
– Ankit Agrawal
Sep 3 at 7:00
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How does OpenID authentication work?
...w-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f353880%2fhow-does-openid-authentication-work%23new-answer', 'question_page');
}
);
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Why does [5,6,8,7][1,2] = 8 in JavaScript?
...-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f7421013%2fwhy-does-5-6-8-71-2-8-in-javascript%23new-answer', 'question_page');
}
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What does “The APR based Apache Tomcat Native library was not found” mean?
...brary on Ubuntu server with:
sudo apt-get install libtcnative-1
If that does not work tomcat-native needs to be installed
Install Oracle java7:
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
sudo apt-get install oracle-java7-set-de...
Prefer composition over inheritance?
...ess cooked once you derive from TypeA.
My acid test for the above is:
Does TypeB want to expose the complete interface (all public methods no less) of TypeA such that TypeB can be used where TypeA is expected? Indicates Inheritance.
e.g. A Cessna biplane will expose the complete interface of...