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Can a CSS class inherit one or more other classes?
...same approach will work with CSS Selectors? Instead of specifying h1, h2, etc you could specify .selector1, .selector2, .etc
– JeffryHouser
Mar 1 '16 at 18:05
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Scalar vs. primitive data type - are they the same thing?
... typically contrasted with compounds, such as arrays, maps, sets, structs, etc. A scalar is a "single" value - integer, boolean, perhaps a string - while a compound is made up of multiple scalars (and possibly references to other compounds). "Scalar" is used in contexts where the relevant distinct...
What programming practice that you once liked have you since changed your mind about? [closed]
...t automatically clean themselves up, such as autoptr, scoped_ptr, CComPtr, etc.
– i_am_jorf
Jul 7 '09 at 2:54
3
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Is there a way for non-root processes to bind to “privileged” ports on Linux?
...service as non-root but bind low ports. The short answer is that you do:
setcap 'cap_net_bind_service=+ep' /path/to/program
And then anytime program is executed thereafter it will have the CAP_NET_BIND_SERVICE capability. setcap is in the debian package libcap2-bin.
Now for the caveats:
You wi...
What methods of ‘clearfix’ can I use?
...he above solutions work for you.
They are listed roughly in chronological order.
"Beat That ClearFix", a clearfix for modern browsers
Thierry Koblentz' of CSS Mojo has pointed out that when targeting modern browsers, we can now drop the zoom and ::before property/values and simply use:
.contai...
Cartesian product of x and y array points into single array of 2D points
... to bugs if you expect the cartesian product to be constructed in the same order for arrays of the same size.
– tlnagy
Jul 27 '15 at 18:35
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What ports does RabbitMQ use?
...differently if changed by someone in the rabbitmq configuration file:
vi /etc/rabbitmq/rabbitmq-env.conf
Ask the computer to tell you:
sudo nmap -p 1-65535 localhost
Starting Nmap 5.51 ( http://nmap.org ) at 2014-09-19 13:50 EDT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00041s la...
In Django, how does one filter a QuerySet with dynamic field lookups?
... query criteria (such as just people who completed a certain workshop). In order for the survey element to be re-usable, I needed for the person creating the survey question to be able to attach those criteria to that question (don't want to hard-code the query into the app).
The solution I came u...
Count(*) vs Count(1) - SQL Server
...vers (such as auto-stats, xevent sessions, query store overhead, triggers, etc.). It is maybe a few thousand extra CPU instructions. So, count(1) does a tiny bit less work during compilation (which will usually happen once and the plan is cached across multiple subsequent executions). For executi...
Read and overwrite a file in Python
...iting changes to the file you are processing without using temporary files etc. The module nicely encapsulates the common operation of looping over the lines in a list of files, via an object which transparently keeps track of the file name, line number etc if you should want to inspect them inside...