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The answer is indicated on the page for f. Specifically, "[t]he f object is the singleton false value, the only object that is not true." In contrast, t is defined simply as SINGLETON: t where SING...
I don't think GNU can be used as a stand-alone tag. Apart from the OS, GNU is also a tool collection of various programs, many used for programming, making is a very ambiguous tag which can't stan...
I'd like to assert that some code can be optimized out, and is not present in the final binary object. #define CONSTANT 0 #if (!CONSTANT) [[landmine_A]] #endif static int foo(void); void...
Yes it is fine and probably encouraged even. I have written several self-answered Q&A here and they were mostly well-received. They aren't all that easy to write though, especially getting the ...
Well, you still need (placement) new for the implementation of the smart pointers themselves. You would also use it (or malloc) to implement custom allocators, for example: https://www.boost.org/d...
Apparently this is controlled by the registry value Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\NuGet\Repository\UWPNugetPackages. I changed it from C:\Program Files (x86)\Microsoft SDKs\UWPNu...
Is it undefined behaviour to cast an uninitialized variable to (void)? Example: int main() { int x; (void)x; return 0; }
If you want a table for including in a latex document, then DataFrame.to_latex should be the best way. import pandas as pd import numpy as np df = pd.DataFrame(np.random.rand(9, 4), columns=['a'...
One possibility with axvline: import pandas as pd import numpy as np import matplotlib.pyplot as plt df = pd.DataFrame(np.random.rand(9, 4), columns=['a', 'b', 'c', 'd']) df.plot.bar() plt....
MWE import pandas as pd import numpy as np import matplotlib.pyplot as plt df = pd.DataFrame(np.random.rand(9, 4), columns=['a', 'b', 'c', 'd']) df.plot.bar() plt.show() Question Ho...
Update: Distinguished between the general case and cases (as with std::string) where it is known that there are no side effects. In the general case, the substitution of the call to a copy constru...
If you have a class which needs to store a construction parameter internally, and you want to take advantage of move semantics, I understand that the parameter should be passed by value: class Foo...
It is undefined according to my reading of the standard (I am referring to the latest public draft). int x; (void)x; In the second line, (void)x is a full expression, but x by itself is alread...
Summary I'm refactoring a Rust-based service/daemon to move away from gRPC and use a Rocket-based API instead. I'm also using the daemonize crate to turn the foreground process into a background p...
Starting with the goals: A naming convention typically aims at supporting several, partly contradictory goals, among which are the following: Compliance with the limitations of the language stan...
There are two things going on here. One which technically explains what's going on fully, and another potential misconception you have. For the former, &T implements the Copy trait regardless ...
An alternative to grep is Awk, which makes this pretty easy. To find lines which contain both: find . -type f -exec awk '/foo/ && /bar/' {} + (Maybe add { print FILENAME ":" FNR ":" $0...
I am working with JSF 2.3 and have a selectManyMenu component that is marked as required but that I want to be cleared if the user unselects all items. Currently, the user can unselect all items, b...
I haven't developed with Perl or DBUS myself (but I have used GTK), so I can only give an answer in general terms rather than specific details. In most, if not all, GUI frameworks, the "run" or "m...
I just found a post in Codidact Meta using showing a rendered table. Looking at the post content, it is using markdown. Playing a bit, I found that the following "plain text" (intended to show ma...
I have found Can we migrate office suite related questions to the Power Users community?, apparently, with a score of +7, 3 answers, but it looks like no decision have made so far. Despite not hav...
Done. I've merged all these tags together and synonymized them. I've also gone ahead and given you the ability to edit tag wikis - we're in need of people who can curate tags!
Makes sense to me! Done as of a few minutes ago.
Nowadays DRY is usually with regards to code, not data. Regardless, even for data, DRY does not outlaw duplication, it just requires a single "authoritative" copy. There are certainly similar ideas...
LEFT returns a text value, so it's working as expected. You might put the LEFT function inside VALUE function to convert the value returned by LEFT into a number. This applies to other spreadsheet ...
