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Approximate cost to access various caches and main memory?
...es for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source Latency (approximate) [Pg. 22]
local L1 CACHE hit, ~4 cycles ( 2.1 - 1.2 ns )
local L...
Image width/height as an attribute or in CSS? [duplicate]
... would have to be redrawn for floated elements, specified padding, margins etc.
Whether to specify in html or css is best judged on individual circumstances. A large number of images of the same size would probably be best served with css, a single image with html. That said, if you are specifying ...
Finding local IP addresses using Python's stdlib
...s won't work always (returns 127.0.0.1 on machines having the hostname in /etc/hosts as 127.0.0.1), a paliative would be what gimel shows, use socket.getfqdn() instead. Of course your machine needs a resolvable hostname.
sha...
How to set host_key_checking=false in ansible inventory file?
...al:
Ansible User Guide - Host Key Checking
You can do it either in the /etc/ansible/ansible.cfg or ~/.ansible.cfg file:
[defaults]
host_key_checking = False
Or you can setup and env variable (this might not work on newer ansible versions):
export ANSIBLE_HOST_KEY_CHECKING=False
...
MongoDB mongorestore failure: locale::facet::_S_create_c_locale name not valid
...
this basically helped me. but also had to edit /etc/locale.gen and enable the needed locales (on arch linux)
– Marian Theisen
Jan 28 '14 at 16:27
...
git ignore vim temporary files
... Vim will create successively named swap files (.swp, .swo, etc.), so I use .*.sw* in my .gitignore to hide them all.
– Drew Stephens
May 20 '11 at 1:15
33
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When to use the different log levels
...diagnostically helpful to people more than just developers (IT, sysadmins, etc.).
Info - Generally useful information to log (service start/stop, configuration assumptions, etc). Info I want to always have available but usually don't care about under normal circumstances. This is my out-of-the-box c...
Why does sudo change the PATH?
...d binary folders in
the PATH. Having already added my
requirements to /etc/environment I was
surprised when I got errors about
missing commands when running them
under sudo.....
I tried the following to fix this
without sucess:
Using the "sudo -E" option - did not work. My ...
What is stability in sorting algorithms and why is it important?
...orithms are stable by nature like Insertion sort, Merge Sort, Bubble Sort, etc. And some sorting algorithms are not, like Heap Sort, Quick Sort, etc.
Background: a "stable" sorting algorithm keeps the items with the same sorting key in order. Suppose we have a list of 5-letter words:
peach
straw...
Grouping functions (tapply, by, aggregate) and the *apply family
...a function to the 1st elements
of each, and then the 2nd elements of each, etc., coercing the result
to a vector/array as in sapply.
This is multivariate in the sense that your function must accept
multiple arguments.
#Sums the 1st elements, the 2nd elements, etc.
mapply(sum, 1:5, 1:5, 1:5)
[1] ...