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How to set up a git project to use an external repo submodule?
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You have a project -- call it MyWebApp that already has a github repo
You want to use the jquery repository in your project
You want to pull the jquery repo into your project as a submodule.
Submodules are really, really easy to reference and use...
How to assign the output of a command to a Makefile variable
...to the Makefile, will you get this? Probably not. You will probably get an error like what is reported here:
makefile:4: *** missing separator. Stop
Why: Because although I personally used a genuine tab, Stack Overflow (attempting to be helpful) converts my tab into a number of spaces. You, frustr...
Remove plot axis values
I was just wondering if there is a way to get rid of axis values, either the x-axis or y-axis respectively, in an r-plot graph.
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Check if SQL Connection is Open or Closed
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@user613326 actually, it wouldn't. There is no error handling in the example code, so any problems while connecting will simply throw and leave you to handle the exception. The returned value is therefore correct.
– Tom Lint
Aug 6 at...
Using backticks around field names
...reserved words or forbidden chars.
In some cases, you get more descriptive error messages.
If you avoid bad practices you don't care, but... in real word, sometimes they are a decent way to avoid SQL injections.
Disadvantages:
They are not standard and usually not portable. However, as long as y...
Platform independent size_t Format specifiers in c?
I want to print out a variable of type size_t in C but it appears that size_t is aliased to different variable types on different architectures. For example, on one machine (64-bit) the following code does not throw any warnings:
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NGINX to reverse proxy websockets AND enable SSL (wss://)?
...te = new X509Certificate2(PfxFileName, SslPassword), RestartAfterListenError = true };
– Andrew Simpson
Jan 18 at 19:03
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Specifically, what's dangerous about casting the result of malloc?
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You won't get a compiler error, but a compiler warning. As the sources you cite say (especially the first one), you can get an unpredictable runtime error when using the cast without including stdlib.h.
So the error on your side is not the cast, but...
Convert from List into IEnumerable format
...t;> to an IEnumerable<IEnumerable<obj>> it gives a compiler error since the second does not inherit from the first one.
– Emaborsa
Jul 24 '17 at 11:08
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Difference between std::result_of and decltype
...a SFINAE-friendly expression, whereas std::result_of could give you a hard error instead of a deduction failure. That has been corrected in C++14: std::result_of is now required to be SFINAE-friendly (thanks to this paper).
So on a conforming C++14 compiler, std::result_of_t<F(Args...)> is st...