大约有 47,000 项符合查询结果（耗时：0.0641秒） [XML]
Disable cache for some images
...ng?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />
From the point of view of the web-server the same file is accessed, but from the point of view of the browser no caching can be performed.
The random number generation can happen either on the server when serving the page (j...
When to use reinterpret_cast?
...le confused with the applicability of reinterpret_cast vs static_cast . From what I have read the general rules are to use static cast when the types can be interpreted at compile time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also.
...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
...u are not defining a function, so function default values are irrelevant:
from datetime import datetime, timedelta
class MyModel(models.Model):
# default to 1 day from now
my_date = models.DateTimeField(default=datetime.now() + timedelta(days=1))
This last line is not defining a function; it ...
How do I remove an item from a stl vector with a certain value?
...
std::remove does not actually erase the element from the container, but it does return the new end iterator which can be passed to container_type::erase to do the REAL removal of the extra elements that are now at the end of the container:
std::vector<int> vec;
// ....
How to use Python's pip to download and keep the zipped files for a package?
...
pip install --download is deprecated. Starting from version 8.0.0 you should use pip download command:
pip download <package-name>
share
|
improve this answer
...
How do I put a bunch of uncommitted changes aside while working on something else
...ndful options:
Shelve the items. This saves the changes and removes them from the working directory so the branch can continue. It doesn't create a change-set.
hg shelve --all --name "UnfinishedChanges"
hg unshelve --name "UnfinishedChanges"
Update/Edit: Newer versions of mercurial may need to...
Getting request payload from POST request in Java servlet
...am() returns a ServletInputStream if you need to read binary data.
Note from the docs: "[Either method] may be called to read the body, not both."
share
|
improve this answer
|
...
How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?
...ern void foo(char* m);
int main() {
// warning: deprecated conversion from string constant to ‘char*’
//foo("Hello");
// no more warning
char msg[] = "Hello";
foo(msg);
}
Is this an appropriate way of solving this? I do not have access to foo to adapt it to accept const c...
Declaring an unsigned int in Java
...ng the use and big deal over having the ability to use unsigned datatypes. From the various sources online I read from, it seems like it revolves around just widening the maximum value, and the implicit by nature guarantee that it's a positive number. Is my understanding correct, or are there other ...
What is the closest thing Windows has to fork()?
... an issue.
Otherwise you can take a look at how Cygwin implements fork(). From a quite old Cygwin's architecture doc:
5.6. Process Creation
The fork call in Cygwin is particularly interesting
because it does not map well on top of
the Win32 API. This makes it very
difficult to implemen...