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How do you create optional arguments in php?
...l, because that can also be used when the values of $bar are boolean. The test then becomes if (is_null($bar)) or if ($bar === null).
– ToolmakerSteve
Aug 17 '16 at 13:48
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Purpose of asterisk before a CSS property
...ies and will in
fact ignore leading non-alphanumeric characters. From my testing this
appears to be the case from at least IE5 onwards.
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Why can't I push to this bare repository?
...er live with the inconvenience, use a different workflow, or install the latest git manually w/o debian/ubuntu packaging.
– Seth Robertson
May 27 '11 at 21:37
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How to get the PATH environment-variable separator in Python?
... your working directory/specific folder -
import os
my = os.path.sep+ "testImages" + os.path.sep + "imageHidden.png"
print(my)
Output for Linux-
/home/*******/Desktop/folder/PlayWithPy/src/testImages/imageHidden.png
Output for Windows-
C:\\Users\\Administrator\\Desktop\\folder\\tests\\te...
How does the “this” keyword work?
...f this in the environment
the arrow function is defined in.
Just for fun, test your understanding with some examples
To reveal the answers, mouse over the light grey boxes.
What is the value of this at the marked line? Why?
window — The marked line is evaluated in the initial global execution...
Loadbalancing web sockets
...a given (source) IP address. It does not apply to incoming TCP/IP. We have tested Autobahn (a high-performance WebSocket server) with 200k active connections on a 2 core, 4GB RAM VM.
Also note that you can do L7 load-balancing on the HTTP path announced during the initial WebSocket handshake. In th...
Using IQueryable with Linq
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@Testing You're actually still not going to the DB. Until you actually enumerate the results (ie: use a foreach, or call ToList()), you don't actually hit the DB.
– Reed Copsey
Nov 1 '12...
ReactJS state vs prop
... changes later on*.
This pattern also makes writing and implementing unit tests a lot more straightforward.
Having iterated a large React app a few times, I've found that this pattern keeps things relatively painless, especially when you have larger components with calculated styles or complicated...
setTimeout / clearTimeout problems
... not clicking anywhere). I use jQuery for the rest but the set/clear in my test function are pure javascript.
7 Answers
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What is the benefit of using $() instead of backticks in shell scripts?
...t
xyzzy
(a) Now that specific command may not actually work, I haven't tested the functionality. So, if you vote me down for it, you've lost sight of the intent :-) It's meant just as an illustration as to how you can nest, not as a bug-free production-ready snippet.
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