大约有 7,700 项符合查询结果（耗时：0.0326秒） [XML]
Do I need to explicitly call the base virtual destructor?
...d destructors will be virtual whether you declare them so or not. In other words:
struct A {
virtual ~A() {}
};
struct B : public A {
virtual ~B() {} // this is virtual
};
struct C : public A {
~C() {} // this is virtual too
};
...
Why is vertical-align: middle not working on my span or div?
....child into .parent's center. Works when pixel sizes are unknown (in other words, always) and no problems with IE9+ too.
.parent { position: relative; }
.child {
position: absolute;
top : 50%;
left: 50%;
-ms-transform: translate(-50%, -50%);
transform : translate...
Why doesn't std::queue::pop return value.?
...do_whatever();
std::cout << ' ' << result;
Next to that: the wording 'more sensible' is a subjective form of 'we looked into usage patterns and found more need for a split'. (Rest assured: the C++ language is not evolving lightly...)
...
How to split a file into equal parts, without breaking individual lines? [duplicate]
...s> <filename> so you'd have to pipe the output to awk to grab the word count, but it's still significantly faster than cating the whole file and piping it to wc
– Carlos P
Dec 7 '13 at 19:46
...
Swift: Testing optionals for nil
... the pyramid of doom when working with multiple optional values.
In other words, your options now include explicitly checking for nil:
if xyz != nil {
// Do something with xyz
}
Optional binding:
if let xyz = xyz {
// Do something with xyz
// (Note that we can reuse the same variabl...
Merge (with squash) all changes from another branch as a single commit
...
A word of caution: this works, but the default commit message includes the log from the branch being merged. The problem is it looks similar to the format you normally see where the entire text shown does not actually become pa...
How to compare files from two different branches?
...it diff A...B is equivalent to git diff $(git-merge-base A B) B.
In other words, this will give a diff of changes in master since it diverged from mybranch (but without new changes since then in mybranch).
In all cases, the -- separator before the file name indicates the end of command line flags....
Calculating a directory's size using Python?
... the du command in order to confine the search to the filesystem. In other words, use ['du', '-shx', path] instead.
– Keith Hanlan
Sep 27 '17 at 20:35
add a comment
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How does #include work in C++? [duplicate]
...th compile-time and program size unnecessarily. [edit: as pointed out by @Swordfish in the comments that the output program size remains unaffected. But still, it's good practice to include only the libraries you actually need, unless it's some competitive competition]
But in contests, using this f...
Export a stash to another computer
...don't technically have to apply the stash to a new commit object. In other words, creating a new branch isn't necessary. However, pushing a stash directly to a remote is tricky to say the least.
– Tyler Crompton
Jul 31 '17 at 8:48
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