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Useless use of cat?
...r peers with.
Update
Here's another UUOC that I posted in an answer at https://unix.stackexchange.com/a/301194/7696:
sqlq() {
local filter
filter='cat'
# very primitive, use getopts for real option handling.
if [ "$1" == "--delete-blank-lines" ] ; then
filter='grep -v "^$"'
shi...
How do I expand a tuple into variadic template function's arguments?
... perfect-forwarding, constexpr-ness, and noexcept-ness) is presented here: https://blog.tartanllama.xyz/passing-overload-sets/.
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How to calculate moving average using NumPy?
...a[rolling_idx].mean(axis=0)[n-1:]
def rollavg_roll_edges(a,n):
# see https://stackoverflow.com/questions/42101082/fast-numpy-roll
'Numpy array rolling, edge handling'
assert n%2==1
a = np.pad(a,(0,n-1-n//2), 'constant')*np.ones(n)[:,None]
m = a.shape[1]
idx = np.mod((m-1)*n...
HTML5 best practices; section/header/aside/article elements
...ocument, HTML5 allows us to also have footer within sections.
Source: https://clzd.me/html5-section-aside-header-nav-footer-elements-not-as-obvious-as-they-sound/
Additionally, here's a description on article, not found in the source above:
article – Used for element that specifies inde...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...icknet -m tcp -t localhost:500 -p Test payload.
This is a simple script (https://github.com/grokit/dcore/tree/master/apps/quicknet) that opens a TCP socket, sends the payload ("Test payload." in this case), waits a few seconds and disconnects. Doing netstat again while this is happening displays t...
Best way to test for a variable's existence in PHP; isset() is clearly broken
...ed and false is omitted.
You can run the tests yourself, check this gist:
https://gist.github.com/mfdj/8165967
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“Keep Me Logged In” - the best approach
..., bool $secure = false [, bool $httponly = false ]]]]]] )
secure (Using HTTPS connection)
httponly (Reduce identity theft through XSS attack)
Definitions
Token ( Unpredictable random string of n length eg. /dev/urandom)
Reference ( Unpredictable random string of n length eg. /dev/urandom)
Si...
Floating point vs integer calculations on modern hardware
...e, lower is faster and preferable):
Update to accomodate @Peter Cordes
https://gist.github.com/Lewiscowles1986/90191c59c9aedf3d08bf0b129065cccc
i7 4700MQ Linux Ubuntu Xenial 64-bit (all patches to 2018-03-13 applied)
short add: 0.773049
short sub: 0.789793
short mul: 0.960152
s...
How to make a great R reproducible example
...ollowing in R:
install.packages("devtools")
library(devtools)
source_url("https://raw.github.com/rsaporta/pubR/gitbranch/reproduce.R")
reproduce(myData)
Details:
This function is an intelligent wrapper to dput and does the following:
automatically samples a large data set (based on size and...
What is a raw type and why shouldn't we use it?
...ne of the authors of the JLS, on why this sort of behavior ought to occur: https://bugs.openjdk.java.net/browse/JDK-6400189. (In short, it makes the specification simpler.)
If it's unsafe, why is it allowed to use a raw type?
Here's another quote from JLS 4.8:
The use of raw types is allowed only ...