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Overloading Macro on Number of Arguments
...) ((a) + (b) + (c))
#define SUM4(a, b, c) ((a) + (b) + (c) + (d))
// ...
PS: __NARG__ is copied from Laurent Deniau & Roland Illig here: https://groups.google.com/group/comp.std.c/browse_thread/thread/77ee8c8f92e4a3fb/346fc464319b1ee5?pli=1
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Random “Element is no longer attached to the DOM” StaleElementReferenceException
...implementation was done by the Chromium developers as part of their tree.
PS. Alternatively, instead of waiting explicitly like in the example above, you can enable implicit waits - this way WebDriver will always loop up until the specified timeout waiting for the element to become present:
driver...
HTTP vs HTTPS performance
Are there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it?
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How do browser cookie domains work?
...bute like Domain=www.example.com will close the way for www4.example.com
PS: trailing comma in Domain attribute will cause the user agent to ignore the attribute =(
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How to link Docker services across hosts?
...t;swarm_ip:swarm_port> run ...
$ docker -H <swarm_ip:swarm_port> ps
$ docker -H <swarm_ip:swarm_port> logs ...
...
# list nodes in your cluster
$ swarm list --token=6856663cdefdec325839a4b7e1de38e8
http://<node_ip:2375>
UPDATE 2
The official approach is now to use libswarm...
How to save username and password with Mercurial?
...ction in your .hgrc or Mercurial.ini file, like so:
[auth]
bb.prefix = https://bitbucket.org/repo/path
bb.username = foo
bb.password = foo_passwd
The ‘bb’ part is an arbitrary identifier and is used to match prefix with username and password - handy for managing different username/password co...
Factors in R: more than an annoyance?
...mption, especially if the strings in the character vector are longer-ish.
PS - I'm joking about the title. I saw your tweet. ;-)
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How to Diff between local uncommitted changes and origin
...fftool
It will start your diff app automatically for each changed file.
PS:
If you did not set a diff app, you can do it like in the example below(I use Winmerge):
git config --global merge.tool winmerge
git config --replace --global mergetool.winmerge.cmd "\"C:\Program Files (x86)\WinMerge\WinM...
onKeyPress Vs. onKeyUp and onKeyDown
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Also, on a "long" press of a key, the KeyDown event keeps firing until the key is released in which case KeyUp is fired only once ;)
– Bernoulli IT
Apr 26 '18 at 13:56
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Cosmic Rays: what is the probability they will affect a program?
... reduce the aftermath of failure. Also, because of more compact size of chips as commented by Joe, the failure rate could be different from what it was 20 years ago.
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