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Singleton: How should it be used
...ee cargo cult programmer in wikipedia)
In user interface widgets
It is supposed to be a cache
In strings
In Sessions
I can go all day long
How to create the best singleton:
The smaller, the better. I am a minimalist
Make sure it is thread safe
Make sure it is never null
Make sure it is created onl...
stop all instances of node.js server
... /f (force) parameter to the command.
Linux machine:
The process is almost identical. You could either kill all Node processes running on the machine (use -$SIGNAL if SIGKILL is insufficient):
killall node
Or also using netstat, you can find the PID of a process listening on a port:
$ netsta...
How to install pip with Python 3?
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+1 Confirmed working on ubuntu 13.04 after sudo apt-get install -y python3.3 and using type pip3
– ehime
Sep 27 '13 at 20:52
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Limit a stream by a predicate
...is seemed unintuitive to me at first (given the method name), but the docs confirm that Stream.allMatch() is a short-circuiting operation. So this will complete even on an infinite stream like IntStream.iterate(). Of course, in retrospect, this is a sensible optimization.
– Bai...
No module named pkg_resources
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July 2018 Update
Most people should now use pip install setuptools (possibly with sudo).
Some may need to (re)install the python-setuptools package via their package manager (apt-get install, yum install, etc.).
This issue can be highly depe...
chrome undo the action of “prevent this page from creating additional dialogs”
...There a few cases where you actually want to use something like Javascript confirm(); and when you press the checkbox, the dialog box will be prevented to show. So the question is: Can you still undo this or even prevent this, because you WANT this dialog box for your own page (not for annonying adv...
How do I get PyLint to recognize numpy members?
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This helped! on VSCode 1.12.2 confirmed it works on WIndows 10 x64.
– Simara
May 22 '17 at 18:18
9
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How to recursively find the latest modified file in a directory?
...ntf is probably GNU-only, ajreals usage of stat -c is too. Although it is possible to do the same on BSD, the options for formatting is different (-f "%m %N" it would seem)
And I missed the part of plural; if you want more then the latest file, just bump up the tail argument.
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How to list all installed packages and their versions in Python?
... :
In [1]: import #import press-TAB
Display all 631 possibilities? (y or n)
ANSI audiodev markupbase
AptUrl audioop markupsafe
ArgImagePlugin avahi marshal
BaseHTTPServer axi ...
How do I update Node.js?
... in windows a double click is all you need to take care of the update. Can confirm having upgraded multiple times successfully simply by downloading the latest version and installing it.
– Xavi3R Elvis
Oct 25 '18 at 12:48
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