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In Swift how to call method with parameters on GCD main thread?
...mportance, while yours brings in ancillary objects that require me to read more docs to learn exactly what I'm doing. And I've edited my original question to contain the correct function call. I had thought the displayQRCode wasn't specific enough but with our comments now it is. Thanks for pointing...
What are fixtures in programming?
...est fixture. When you are writing tests you will often find that you spend more time writing the code to set up the fixture than you do in actually testing values.
To some extent, you can make writing the fixture code easier by paying careful attention to the constructors you write. However, a much ...
How to add new column to MYSQL table?
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Why does C++ need a separate header file?
...ource for the definitions.
To avoid marking everything "inline".
If your more general question is, "why isn't C++ identical to Java?", then I have to ask, "why are you writing C++ instead of Java?" ;-p
More seriously, though, the reason is that the C++ compiler can't just reach into another trans...
How do I shutdown, restart, or log off Windows via a bat file?
... hang the system. To force an immediate reboot: shutdown -t 0 -r -f. For a more friendly "give them some time" option, you can use this: shutdown -t 30 -r. The -f is implied by the timeout. (from proposed edit by Mateusz Konieczny)
– Ole V.V.
Feb 8 '17 at 11:27...
Can ordered list produce result that looks like 1.1, 1.2, 1.3 (instead of just 1, 2, 3, …) with css?
...l>
</li>
</ol>
See Nested counters and scope for more information.
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Java concurrency: Countdown latch vs Cyclic barrier
...s starting etc... a CountdownLatch is fine. A CyclicBarrier is useful for more complex co-ordination tasks. An example of such a thing would be parallel computation - where multiple subtasks are involved in the computation - kind of like MapReduce.
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How to create an array of 20 random bytes?
...om();
byte[] bytes = new byte[20];
random.nextBytes(bytes);
Java 8 (even more secure):
byte[] bytes = new byte[20];
SecureRandom.getInstanceStrong().nextBytes(bytes);
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Update Row if it Exists Else Insert Logic with Entity Framework
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Using the field of an object as a generic Dictionary key
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