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What do single quotes do in C++ when used on multiple characters?

... It's a multi-character literal. 1952805748 is 0x74657374, which decomposes as 0x74 -> 't' 0x65 -> 'e' 0x73 -> 's' 0x74 -> 't' Edit: C++ standard, §2.14.3/1 - Character literals (...) An ordinary character literal that contains more than one c-char is a multicharacter literal . A ...
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What is the reason for performing a double fork when creating a daemon?

...irst child is a session leader without a controlling terminal, it's possible for it to acquire one by opening a terminal in the future (System V- based systems). This second fork guarantees that the child is no longer a session leader, preventing the daemon from ever acquiri...
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Storing time-series data, relational or non?

...etric, DateTime) The table can be used to Pivot the data (ie. Devices across the top and Metrics down the side, or pivoted) using exactly the same SQL code (yes, switch the cells). I use the table to erect an unlimited variety of graphs and charts for customers re their server performance. Mo...
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Specifying and saving a figure with exact size in pixels

...'myfig.png', dpi=1000) Note that I used the figure dpi of 100 to fit in most screens, but saved with dpi=1000 to achieve the required resolution. In my system this produces a png with 3840x7190 pixels -- it seems that the DPI saved is always 0.02 pixels/inch smaller than the selected value, which ...
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What is a message pump?

In this thread (posted about a year ago) there is a discussion of problems that can come with running Word in a non-interactive session. The (quite strong) advice given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on...
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Does Python support multithreading? Can it speed up execution time?

...he GIL to allow multiple threads of C code and one Python thread to run across multiple cores. This extends to I/O controlled by the kernel, such as select() calls for socket reads and writes, making Python handle network events reasonably efficiently in a multi-threaded multi-core setup. What many...
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What is the best way to create constants in Objective-C

I am creating a Reddit client for learning purposes. I need to have a file with constants in it. I was thinking about importing the file in the Reddit-Prefix.pch file to make the constants available to all the files. Is it a good way of doing things? Also, I've done my research and found several...
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window.close and self.close do not close the window in Chrome

The issue is that when I invoke window.close() or self.close() it doesn't close the window. Now there seems to be a belief that in Chrome you can't close by script any window that is not script created. That is patently false but regardless it is supposed to still do it, even if it requires to p...
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How to read the Stock CPU Usage data

...CPU usage, and the green bar underneath it shows the CPU time spent in compositing the screen. Note: You cannot turn this feature off once it is on, without restarting the emulator. developer.android.com/tools/debugging/debugging-devtools.html – Rolf ツ Sep 2...
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What is the difference between “screen” and “only screen” in media queries?

...size you would be talking about anything smaller than a desktop screen in most cases. @media screen and (max-width:632px) This one is saying for a device with a screen and a window with max-width of 632px apply the style. This is almost identical to the above except you are specifying screen as ...