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How does __proto__ differ from constructor.prototype?
...hat is function Empty() {} you refer to being equal to Function.prototype, etc?, what is the code you used in chrome console?
– drodsou
Jul 28 '12 at 18:32
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Passing argument to alias in bash [duplicate]
...ce you get all the perks that functions give (see completion, traps, bind, etc for the goodies that functions can provide, in the bash manpage).
I hope that helps you out :)
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Best way to test for a variable's existence in PHP; isset() is clearly broken
...ng them as though they were. However, since they can be iterated, counted, etc, a missing value is not the same as one whose value is null.
The answer in this case, is to use array_key_exists() instead of isset().
Since this is takes the array to check as a function argument, PHP will still raise ...
How do I write good/correct package __init__.py files
...-- if "importing the package" means getting all sort of classes, functions etc defined directly as part of the package, then I would lexically copy the contents of blah.py into the package's __init__.py instead and remove blah.py (the multiplication of source files does no good here).
If you do ins...
if A vs if A is not None:
... And many other values too, such as empty list, empty set, empty tuple etc. Essentially, anything that is not truthy per docs.python.org/3/library/stdtypes.html#truth-value-testing.
– jarmod
Dec 4 '19 at 23:46
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Showing the stack trace from a running Python application
... to continue running (though note that you will probably interrupt any I/O etc at the point you signal, so it isn't fully non-intrusive.
I've another script that does the same thing, except it communicates with the running process through a pipe (to allow for debugging backgrounded processes etc). ...
Cannot download Docker images behind a proxy
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First, create a systemd drop-in directory for the Docker service:
mkdir /etc/systemd/system/docker.service.d
Now create a file called /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY environment variable:
[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80...
Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
...s to strings and number values, using == or != or <, > >=, <=, etc.
You can assign an integer to a variable and then get true or false based on that variable value.
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Get names of all keys in the collection
...s exactly what the question asks, and can be configured with limits, depth etc. Recommended by any who follows.
– Paul Biggar
Jun 10 '12 at 20:35
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Get absolute path of initially run script
...nd line, but, a solution should function just as well if run within Apache etc.
15 Answers
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