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What is the reason for performing a double fork when creating a daemon?
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So, as I understand it, if my program starts and forks a child process, this very first child process will be a session leader and will be able to open a TTY terminal. But if I fork again from this child and terminate this first child, the second forked child won...
omp parallel vs. omp parallel for
...t team. A team is the group of threads
executing the program. At program start, the team consists only of a
single member: the master thread that runs the program.
To create a new team of threads, you need to specify the parallel
keyword. It can be specified in the surrounding context:
#...
Add missing dates to pandas dataframe
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you may use this instead for idx to skip entering start and end dates manually: idx = pd.date_range(df.index.min(), df.index.max())
– Reveille
Apr 3 at 15:22
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Change branch base
...y rebased your current-branch on top the new-base-branch.
Note: If you start to mess up, then you can do git rebase --abort anytime during the rebase process and get back to the starting point.
share
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multiprocessing: sharing a large read-only object between processes?
...ed reads.
You can do this from a Python context in several ways
Write a startup program that (1) breaks your original gigantic object into smaller objects, and (2) starts workers, each with a smaller object. The smaller objects could be pickled Python objects to save a tiny bit of file reading t...
How do I write good/correct package __init__.py files
...eaking an existing application. But if you're designing a package from the start. I think it's best to leave __init__.py files empty.
for example:
foo.py - contains classes related to foo such as fooFactory, tallFoo, shortFoo
then the app grows and now it's a whole folder
foo/
__init__.py
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How do I fix blurry text in my HTML5 canvas?
...to unnecessary pixels. For higher ratios you are now right back where you started with a blurry, low res asset/element. Another issue that Philipp seemed to be alluding to is that everything you draw to your context must now be drawn to your doubled width/height even though it is being displayed a...
C# Object Pooling Pattern implementation
...ow new InvalidOperationException("The buffer is empty.");
int startPosition = position;
do
{
Advance();
Slot slot = slots[position];
if (!slot.IsInUse)
{
slot.IsInUse = true;
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What is the AppDelegate for and how do I know when to use it?
...tant of these are:
applicationDidFinishLaunching: - good for handling on-startup configuration and construction
applicationWillTerminate: - good for cleaning up at the end
You should avoid putting other functionality in the AppDelegate since they don't really belong there. Such other functionali...
What's the best online payment processing solution? [closed]
...ry easy to do, but still a lot harder than adding a PayPal button) and you start to build up a true picture.
On the flip side, a service such as PayPal has very low setup costs (no fee to pay, and trivially easy to integrate), but relatively high transaction costs. It is great for high value / low v...