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What __init__ and self do on Python?
I'm learning the Python programming language and I've came across something I don't fully understand.
18 Answers
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HashSet vs. List performance
...be better off using a List<T>.
I did a test for this on my machine, and, well, it has to be very very small to get an advantage from List<T>. For a list of short strings, the advantage went away after size 5, for objects after size 20.
1 item LIST strs time: 617ms
1 item HASHSET strs t...
How do you declare an interface in C++?
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To expand on the answer by bradtgmurray, you may want to make one exception to the pure virtual method list of your interface by adding a virtual destructor. This allows you to pass pointer ownership to another party without expos...
What's the correct way to sort Python `import x` and `from x import y` statements?
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Imports are generally sorted alphabetically and described in various places beside PEP 8.
Alphabetically sorted modules are quicker to read and searchable. After all python is all about readability.
Also It is easier to verify that something is imported, and avoids du...
What's the difference between `raw_input()` and `input()` in Python 3?
What is the difference between raw_input() and input() in Python 3?
6 Answers
6
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How do you read from stdin?
...op through all the lines in the input specified as file names given in command-line arguments, or the standard input if no arguments are provided.
Note: line will contain a trailing newline; to remove it use line.rstrip()
s...
How do I enumerate the properties of a JavaScript object? [duplicate]
...till confuse me a bit. Again, inheritance is a normal part of OO languages and is therefore part of JavaScript, notwithstanding it being prototypical.
Now, that said, hasOwnProperty() is useful for filtering, but we don't need to sound a warning as if there is something dangerous in getting inherit...
What do the f and t commands do in Vim?
Can somebody explain to me what the f and t commands do in vim and exactly how they work? I can't seem to find this information but people keep telling me that they are very useful. Would really appreciate an answer with an example if possible, thanks!
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How to create permanent PowerShell Aliases
...h user have to execute it. We can consider only 2 of them: the "all users" and the "only your user" paths.
So to answer your question you only have to create a profile.ps1 file containing the code you want to be executed, that is
New-Alias Goto Set-Location
and save it in the proper path:
"$Ho...
How do I update the GUI from another thread?
...ET 2.0, here's a nice bit of code I wrote that does exactly what you want, and works for any property on a Control:
private delegate void SetControlPropertyThreadSafeDelegate(
Control control,
string propertyName,
object propertyValue);
public static void SetControlPropertyThreadSafe...