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When to use self over $this?
...context (are we in an object-context already? Are we outside of an object? etc).
How to execute a Python script from the Django shell?
...
I ended up doing sys.path.append(os.getcwd()), it works when I am inside my project directory, my DJANGO_SETTINGS_MODULE is correct and I try to run a script that import models, views, etc.
– Danilo Cabello
Jul 11 '14 at 16...
When is TCP option SO_LINGER (0) required?
...nt of your server application misbehaves (times out, returns invalid data, etc.) an abortive close makes sense to avoid being stuck in CLOSE_WAIT or ending up in the TIME_WAIT state.
If you must restart your server application which currently has thousands of client connections you might consider se...
Difference between JSON.stringify and JSON.parse
... often confuse JSON "string representation" and Object (or dict in Python, etc.).
– jbmusso
Dec 13 '18 at 12:56
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Validating IPv4 addresses with regexp
...ification/security as 023 needs to be converted to 23 to avoid duplicates, etc. Thanks for trying to make things better !
– Danail Gabenski
Dec 27 '19 at 1:03
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Is there a Python function to determine which quarter of the year a date is in?
...)//3 will give you the quarter (0 for first quarter, 1 for second quarter, etc -- add 1 if you need to count from 1 instead;-).
Originally two answers, multiply upvoted and even originally accepted (both currently deleted), were buggy -- not doing the -1 before the division, and dividing by 4 ins...
Can Objective-C switch on NSString?
...CardType;
Done this way, Ace would be be equal to case 0, Two as case 1, etc.
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When should I use C++ private inheritance?
...d of forwarding functions.
using vector<int>::push_back;
// etc...
};
When implementing the Adapter Pattern, inheriting privately from the Adapted class saves having to forward to an enclosed instance.
To implement a private interface. This comes up often with the Observer P...
How to keep environment variables when using sudo
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Notice that you should never edit the etc/sudoers directly. Instead, use the visudo command, which syntax-checks your edits before overwriting the sudoers file. That way, you don't lock yourself out if you make a mistake while editing.
– Hen...
C++ lambda with captures as a function pointer
... int {
entries.push_back(fpath);
return 0;
};
int ret = ftw("/etc", callback);
for (auto entry : entries ) {
cout << entry << endl;
}
return ret;
}
Edit:
I had to revisit this when I ran into legacy code where I couldn't modify the original function signature, ...