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What is an index in SQL?
What is an index in SQL? Can you explain or reference to understand clearly?
11 Answers
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How to use enums as flags in C++?
... nicely in C# via the [Flags] attribute, but what's the best way to do this in C++?
22 Answers
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Loop inside React JSX
... trying to do something like the following in React JSX (where ObjectRow is a separate component):
66 Answers
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How to get unique device hardware id in Android? [duplicate]
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Update: 19 -11-2019
The below answer is no more relevant to present day.
So for any one looking for answers you should look at the documentation linked below
https://developer.android.com/training/articles/user-data-ids
Old Answer - Not relevant now.
You ch...
Declaring functions in JavaScript [duplicate]
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I am on different opinion with most of the people here. Technically this syntax may mean the same for declaring functions both ways
(I stand incorrect on my last statement. I read up on a diff post why they are technically diff and I'll add in the end, why)
; but the way they play a role in evo...
Overload with different return type in Java?
Why is it not possible to overload a function just by changing the return type? Will that change in a future version of Java?
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Random data in Unit Tests?
...o writes unit tests for objects which fill their fields with random data. His reason is that it gives a wider range of testing, since it will test a lot of different values, whereas a normal test only uses a single static value.
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Using a strategy pattern and a command pattern
...lementation details from their calling classes. The only difference I can discern is that the Strategy pattern takes in parameters for execution, while the Command pattern doesn't.
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In the shell, what does “ 2>&1 ” mean?
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File descriptor 1 is the standard output (stdout).
File descriptor 2 is the standard error (stderr).
Here is one way to remember this construct (although it is not entirely accurate): at first, 2>1 may look like a good way to redirect stde...
What is the difference between float and double?
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the d...