大约有 40,700 项符合查询结果（耗时：0.0439秒） [XML]
What is a callback?
What's a callback and how is it implemented in C#?
11 Answers
11
...
How to initialise memory with new operator in C++?
...allocated an array of type int with the new operator, how can I initialise them all to 0 without looping through them all myself? Should I just use memset ? Is there a “C++” way to do it?
...
How can I access and process nested objects, arrays or JSON?
...has only one data type which can contain multiple values: Object. An Array is a special form of object.
(Plain) Objects have the form
{key: value, key: value, ...}
Arrays have the form
[value, value, ...]
Both arrays and objects expose a key -> value structure. Keys in an array must be num...
What is dynamic programming? [closed]
What is dynamic programming ?
10 Answers
10
...
Structure padding and packing
...bers would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
char c;
char gap_1[3]; /* -"-:...
What's the difference between “static” and “static inline” function?
... called frequently that can make a big performance difference.
However, this is only a "hint", and the compiler may ignore it, and most compilers will try to "inline" even when the keyword is not used, as part of the optimizations, where its possible.
for example:
static int Inc(int i) {return i+...
Relationship between SciPy and NumPy
...method executes a
from numpy import *
so that the whole numpy namespace is included into scipy when the scipy module is imported.
The log10 behavior you are describing is interesting, because both versions are coming from numpy. One is a ufunc, the other is a numpy.lib function. Why scipy is pre...
What is the difference between ports 465 and 587?
... 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them?
6 Answers
...
What does .class mean in Java?
...hat represents information about given class.
For example, if your class is Print, then Print.class is an object that represents the class Print on runtime. It is the same object that is returned by the getClass() method of any (direct) instance of Print.
Print myPrint = new Print();
System.out.p...
When is std::weak_ptr useful?
...ny useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary?
13 Answers
...