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Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
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There are excellent answers out there, so I just add some things forgotten.
0. RAII is about scopes
RAII is about both:
acquiring a resource (no matter what resource) in the constructor, and un-acquiring it in the destructor.
havin...
Get path of executable
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Yes. That is an excellent suggestion. Of course some additional changes would need to be made such as checking for errors, resizing the buffer, and trying again.
– Ben Key
Dec 8 '15 at 18:28
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Best explanation for languages without null
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Excellent answer with great examples!
– thSoft
Aug 30 '11 at 15:15
add a comment
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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
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Thanks @Matthew. @mnel's answer is excellent, but my question was not how to do a full or left join, but "Is there a reason only two types of joins are supported?" So now it's a bit more philosophical ;-) Actually I don't prefer merge syntax, but there appear...
Referring to the null object in Python
...t do much of anything that might be of interest to a program, it's thus an excellent replacement for None as a flag. Some caveats apply, more about that after the code.
With function
def my_function(value, param1=undefined, param2=undefined):
if param1 is undefined:
# We know nothing was...
How do JavaScript closures work?
...his box of state is invisible to the caller of the function, delivering an excellent mechanism for data-hiding and encapsulation.
And remember: functions in JavaScript can be passed around like variables (first-class functions), meaning these pairings of functionality and state can be passed around ...
What is the difference between SAX and DOM?
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load an excel of 40m size,use 200m memory when use a SAX parser,but use 9g memory when use DOM parser.
– zhiyuan_
Nov 2 '18 at 3:55
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Why do I have to access template base class members through the this pointer?
... know. We can now ask why the standard mandates that but as Steve Jessop's excellent answer and others point out, the answer to this latter question is rather long and arguable. Unfortunately, when it comes to the C++ Standard, it is often nearly impossible to give a short and self-contained explana...
How to detect if multiple keys are pressed at once using JavaScript?
...ed out in the comments that event.keyCode is deprecated.
There, he gave an excellent alternative: event.key, which returns a string representation of the key being pressed, like "a" for A, or "Shift" for Shift.
I went ahead and cooked up a tool for examining said strings.
element.onevent vs element....
In C++, is it still bad practice to return a vector from a function?
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@SigTerm: That is an excellent comment!!! most of the referenced article is too vague to even consider for use in production. People think anything an author who's written a Red In-Depth book is gospel and should be adhered to without any further...