大约有 47,000 项符合查询结果（耗时：0.0697秒） [XML]
Can I use if (pointer) instead of if (pointer != NULL)?
...rived_ptr != nullptr) { ... }
(or, preferrably, auto derived_ptr = ...). Now, this is bad, because it leaves the (possibly invalid, i.e. null) derived pointer outside of the safety-guarding if block's scope. This isn't necessary, as C++ allows you to introduce boolean-convertable variables inside ...
Removing an element from an Array (Java) [duplicate]
...y bad programming.
Suppose you had an array taking up, say, 100mb of ram. Now you want to iterate over it and delete 20 elements.
Give it a try...
I know you ASSUME that it's not going to be that big, or that if you were deleting that many at once you'd code it differently, but I've fixed an a...
What is the difference between 'git pull' and 'git fetch'?
... @Tino yours is really the most important point. People may not know that "remote" branches are actually stored as a bunch of hashes in .git/refs/remotes/origin/.
– Chris
Sep 12 '13 at 21:49
...
how does Array.prototype.slice.call() work?
I know it is used to make arguments a real array, but I don't understand what happens when using Array.prototype.slice.call(arguments)
...
Update data in ListFragment as part of ViewPager
... I tried this solution, created a method to update fragment's data. But now I am not able to see the views of fragment. I can see the data is going to fragment but views are not visible. Any help?
– Arun Badole
May 18 '15 at 11:08
...
An invalid form control with name='' is not focusable
...field (which was "required") and triggers this error. Solution, remove the now hidden "required" attribute from the form and rely on other method to ensure it is filled in.
– john
Apr 14 '17 at 3:43
...
Regex how to match an optional character
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not.
...
A Regex that will never be matched by anything
...
Interestingly, my original with a simple literal that I "know" won't appear in my input turns out to be fastest, in Python. With a 5MB input string, and using this in a sub() operation, (?!x)x takes 21% longer, (?!()) is 16%, and ($^) 6% longer. May be significant in some cases, t...
Firebase Storage How to store and Retrieve images [closed]
...icker which will store your image to their servers and Filepicker which is now called Filestack, will provide you with a url to the image. You can than store the url to Firebase.
share
|
improve thi...
Correct way to write loops for promise.
...
OK, I see it now. As the .bind() obfuscates the new value, I think I might choose to longhand the function out for readability. And sorry if I'm being thick but if promiseFor and promiseWhile don't coexist, then how does one call the othe...