大约有 43,000 项符合查询结果（耗时：0.0566秒） [XML]
Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
...foo)() = foo; works: foo is implicitly converted into a pointer to itself and that pointer is assigned to p1_foo.
The unary &, when applied to a function, yields a pointer to the function, just like it yields the address of an object when it is applied to an object. For pointers to ordinary f...
Converting HTML files to PDF [closed]
... say the real problem with Flying Saucer is that it requires a well-formed and valid XML document. It's easy to unwittingly break the PDF rendering by including something like an ampersand in your HTML, or some javascript code that makes your rendered HTML not strict XHTML. Though this can be mitiga...
Java: random long number in 0
Random class has a method to generate random int in a given range. For example:
16 Answers
...
Fully backup a git repo?
Is there a simple way to backup an entire git repo including all branches and tags?
13 Answers
...
Bootstrap Modal immediately disappearing
...
bootstrap.min.js (same as above, just minified)
bootstrap-modal.js (the standalone plugin)
a dependency loader, e.g., require('bootstrap')
Debugging Tips
A good place to start is to inspect the registered click event listeners using the developer tools in your browser. Chrome, for instance, wil...
Sort a list by multiple attributes?
...1], x[2]))
Or you can achieve the same using itemgetter (which is faster and avoids a Python function call):
import operator
s = sorted(s, key = operator.itemgetter(1, 2))
And notice that here you can use sort instead of using sorted and then reassigning:
s.sort(key = operator.itemgetter(1, 2)...
Proper URL forming with Query String and Anchor Hashtag
When both a query string and anchor tag (hash tag) are visible in a URL, what is the proper order for them to appear?
4 Ans...
Need a simple explanation of the inject method
...umulator: the result of each run of the block is stored in the accumulator and then passed to the next execution of the block. In the case of the code shown above, you are defaulting the accumulator, result, to 0. Each run of the block adds the given number to the current total and then stores the r...
How can I configure the font size for the tree item in the package explorer in Eclipse?
..., there was no way in Eclipse to change the font used for Package Explorer and other such views. You can only change the font for editor views. This is a policy decision on the part of the Eclipse developers (see, e.g., bugs 49548, 202091). (Grumble.) The font used is the one set by the general look...
How to sum up elements of a C++ vector?
...tor.begin(); it != vector.end(); ++it)
sum_of_elems += *it;
Using a standard algorithm:
#include <numeric>
sum_of_elems = std::accumulate(vector.begin(), vector.end(), 0);
Important Note: The last argument's type is used not just for the initial value, but for the type of the resu...