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How to make a Python script run like a service or daemon in Linux
I have written a Python script that checks a certain e-mail address and passes new e-mails to an external program. How can I get this script to execute 24/7, such as turning it into daemon or service in Linux. Would I also need a loop that never ends in the program, or can it be done by just havin...
Concurrent vs serial queues in GCD
...A simple example: you have a block that takes a minute to execute. You add it to a queue from the main thread. Let's look at the four cases.
async - concurrent: the code runs on a background thread. Control returns immediately to the main thread (and UI). The block can't assume that it's the only ...
How to find unused/dead code in java projects [closed]
...rge java projects? Our product has been in development for some years, and it is getting very hard to manually detect code that is no longer in use. We do however try to delete as much unused code as possible.
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setTimeout or setInterval?
...ach will be more accurate than the setTimeout approach, since setTimeout waits 1000ms, runs the function and then sets another timeout. So the wait period is actually a bit more than 1000ms (or a lot more if your function takes a long time to execute).
Although one might think that setInterval will...
Make Iframe to fit 100% of container's remaining height
I want to design a web page with a banner and an iframe. I hope the iframe can fill all the remaining page height and be resized automatically as the browser is resizing. Is it possible to get it done without writing JavaScript code, only with CSS?
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What is the difference between memmove and memcpy?
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With memcpy, the destination cannot overlap the source at all. With memmove it can. This means that memmove might be very slightly slower than memcpy, as it cannot make the same assumptions.
For example, memcpy might always c...
Can you build dynamic libraries for iOS and load them at runtime?
...e allowed.
However, in iOS8 you can use dynamic libraries and frameworks. It should "just work"
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Why is pow(a, d, n) so much faster than a**d % n?
I was trying to implement a Miller-Rabin primality test , and was puzzled why it was taking so long (> 20 seconds) for midsize numbers (~7 digits). I eventually found the following line of code to be the source of the problem:
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What is the use of interface constants?
...mplementing that interface) is a bad practice and there is even a name for it, the Constant Interface Antipattern, see Effective Java, Item 17:
The constant interface pattern is a poor use of interfaces. That a class uses some constants internally is an implementation detail. Implementing a cons...
Why is my program slow when looping over exactly 8192 elements?
...rogram in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at:
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