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What is the meaning of the term “thread-safe”?
...ch thread has its own private copy. These variables retain their values across subroutine and other code boundaries, and are thread-safe since they are local to each thread, even though the code which accesses them might be reentrant.
Atomic operations:
Shared data are accessed by using a...
Why do we need to install gulp globally and locally?
...gulp script gets into your PATH because the global node/bin/ directory is most likely on your path.
To respect your local dependencies though, gulp will use your locally installed version of itself to run the gulpfile.js.
s...
Can I run multiple programs in a Docker container?
... and mongo database. Normally I would install both in a VM and, forward a host port to the guest web app. I'd like to give Docker a try but I'm not sure how I'm meant to use more than one program. The documentations says there can only be only ENTRYPOINT so how can I have Mongo and my flask applicat...
Receive result from DialogFragment
I am using DialogFragments for a number of things: choosing item from list, entering text.
13 Answers
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When NOT to call super() method when overriding?
...SAXParser example you provide, the implementations of DefaultHandler for those methods are just empty, so that subclasses can override them and provide a behavior for those methods. In the javadoc for this method this is also pointed out.
public void startElement (String uri, String localName,
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Upgrade python in a virtualenv
... He specifically did not want to reinstall any packages if possible. Obviously you have never installed numpy from source if you do not know why it matters ;) hint: it takes a LOOOOOOOOOOOOOONG time.
– Antti Haapala
Jun 16 '12 at 20:16
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Generating a UUID in Postgres for Insert statement?
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uuid-ossp is a contrib module, so it isn't loaded into the server by default. You must load it into your database to use it.
For modern PostgreSQL versions (9.1 and newer) that's easy:
CREATE EXTENSION IF NOT EXISTS "uuid-ossp"...
How to install latest version of git on CentOS 7.x/6.x
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You can use WANDisco's CentOS repository to install Git 2.x: for CentOS 6, for CentOS 7
Install WANDisco repo package:
yum install http://opensource.wandisco.com/centos/6/git/x86_64/wandisco-git-release-6-1.noarch.rpm
- or -
yum install http://opens...
Capturing Groups From a Grep RegEx
I've got this little script in sh (Mac OSX 10.6) to look through an array of files. Google has stopped being helpful at this point:
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Unescape HTML entities in Javascript?
... API as Wladimir suggests, I edited my previous answer since the function posted introduced a security vulnerability.
The following snippet is the old answer's code with a small modification: using a textarea instead of a div reduces the XSS vulnerability, but it is still problematic in IE9 and Fir...