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Draw a perfect circle from user's touch
...n this App (Kids drawings: circle, lines, etc, whatever came to his mind).
Then he started to draw circles and then he asked me to make it "good circle" (from my understanding: make the drawn circle perfectly round, as we know
no matter how stable we try to draw something with our finger on the scr...
In Python, when should I use a function instead of a method?
...ould apply to other things too, or is done by something else to the object then it should be a function (or perhaps a member of something else).
When introducing programming, it is traditional (albeit implementation incorrect) to describe objects in terms of real-world objects such as cars. You men...
C++ valarray vs. vector
...ou generally wanted to do was apply a single operation to an entire array, then apply the next operation to the entire array, and so on until you'd done everything you needed to do.
Unless you're dealing with fairly small arrays, however, that tends to work poorly with caching. On most modern mach...
Removing duplicates in lists
...itrary order is created.
Maintaining order
If order is important to you, then you will have to use a different mechanism. A very common solution for this is to rely on OrderedDict to keep the order of keys during insertion:
>>> from collections import OrderedDict
>>> list(Ordere...
How do I make python wait for a pressed key?
...store stdin's current setup, setup stdin for reading single keystrokes
then read the single keystroke then revert stdin back after reading the
keystroke.
Returns a tuple of characters of the key that was pressed - on Linux,
pressing keys like up arrow results in a sequence of chara...
Using std Namespace
...ng out the directive. It's a tautology - if the directive isn't necessary, then there's no need to use it.
Similarly, if you can get by with a few using-declarations (instead of using-directives) for specfic types in the std namespace, then there's no reason you shouldn't have just those spefcifi...
How do I copy a string to the clipboard on Windows using Python?
...ake a basic Windows application that builds a string out of user input and then adds it to the clipboard. How do I copy a string to the clipboard using Python?
...
How do I change tab size in Vim?
...nd 'shiftwidth' to 4 (or 3 or whatever you prefer) and use 'noexpandtab'. Then Vim will use a mix of tabs and spaces, but typing and will behave like a tab appears every 4 (or 3) characters.
Set 'tabstop' and 'shiftwidth' to whatever you prefer and use 'expandtab'. This way you will always inse...
What is the most effective way to get the index of an iterator of an std::vector?
...i: I agree with that, but in a very special case if it is really required, then still that code will work.
– Naveen
Jan 28 '10 at 9:38
9
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When do we need to set ProcessStartInfo.UseShellExecute to True?
...eateProcess function - the short answer is that if UseShellExecute is true then the Process class will use the ShellExecute function, otherwise it will use CreateProcess.
The longer answer is that the ShellExecute function is used to open a specified program or file - it is roughly equivalnt to typi...