What does casting to `void` really do? [duplicate]
Casting to void is used to suppress compiler warnings. The Standard says in §5.2.9/4 says, Any expression can be explicitly converted to type “cv void.” The expression value is discarded.
suppress-warnings
Suppress duplicate warnings in IntelliJ IDEA by annotation
This works for me. You have to set it on both classes/methods if you want to suppress the warning both places. @SuppressWarnings(“Duplicates”) private void myDuplicatedMethod() { … }
What value for @SuppressWarnings do I use to suppress the “Can be private” warning?
It is best to simply disable this inspection, either for your whole project or for a specific class. Put your cursor on the warning and press Alt + Enter to bring up the following menu, which allows you to disable it: If you really want to use @SuppressWarnings you can choose the Suppress for class … Read more
How to suppress warnings in external headers in Visual C++
Use this method around (a) header(s) that you cannot or don’t want to change, but which you need to include. You can selectively, and temporarily disable all warnings like this: #pragma warning(push, 0) // Some include(s) with unfixable warnings #pragma warning(pop) Instead of 0 you can optionally pass in the warning number to disable, so … Read more
Exclude all permission denied messages from “du”
du -cBM –max-depth=1 2>/dev/null | sort -n or better in bash (just filter out this particular error, not all like last snippet) du -cBM –max-depth=1 2> >(grep -v ‘Permission denied’) | sort -n
Disable warnings in Xcode from frameworks
If your third-party libraries are added as a separate target, you can check Inhibit all warnings for that specific target to turn all warnings off. If your library is added as plain source files to your current target, you can set -w compiler flag for individual sources to mute all warnings in them. You have … Read more
Ignore divide by 0 warning in NumPy
You can disable the warning with numpy.seterr. Put this before the possible division by zero: np.seterr(divide=”ignore”) That’ll disable zero division warnings globally. If you just want to disable them for a little bit, you can use numpy.errstate in a with clause: with np.errstate(divide=”ignore”): # some code here For a zero by zero division (undetermined, results … Read more
How do I suppress shell script error messages?
You have two options: Suppress rm warnings $ rm tempfl.txt 2> /dev/null Redirect script output to /dev/null $ ./myscript.sh 2> /dev/null The latter has a drawback of missing all other warning messages produced by your script.
Suppress console output in PowerShell
Try redirecting the output to Out-Null. Like so: $key = & ‘gpg’ –decrypt “secret.gpg” –quiet –no-verbose | out-null
How to disable warnings for particular include files?
When using GCC you can use the -isystem flag instead of the -I flag to disable warnings from that location. So if you’re currently using gcc -Iparent/path/of/bar … use gcc -isystem parent/path/of/bar … instead. Unfortunately, this isn’t a particularly fine-grained control. I’m not aware of a more targeted mechanism.