大约有 40,000 项符合查询结果（耗时：0.0438秒） [XML]
How can I avoid running ActiveRecord callbacks?
I have some models that have after_save callbacks. Usually that's fine, but in some situations, like when creating development data, I want to save the models without having the callbacks run. Is there a simple way to do that? Something akin to...
...
How should I log while using multiprocessing in Python?
...that its log goes to a different file descriptor (to disk or to pipe.) Ideally, all log entries should be timestamped.
Your controller process can then do one of the following:
If using disk files: Coalesce the log files at the end of the run, sorted by timestamp
If using pipes (recommended): C...
Display block without 100% width
... gets positioned before the last span. Guess one solution would be to make all child elements in the li float.
– Staffan Estberg
Oct 3 '12 at 17:01
...
What is “rvalue reference for *this”?
Came across a proposal called "rvalue reference for *this" in clang's C++11 status page .
3 Answers
...
How do I read any request header in PHP
...
IF: you only need a single header, instead of all headers, the quickest method is:
<?php
// Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with '-' replaced by '_')
$headerStringValue = $_SERVER['HTTP_XXXXXX_XXXX'];
ELSE IF: you run PHP...
TypeError: method() takes 1 positional argument but 2 were given
...- it's just that the first one is implicit, from the point of view of the caller.
This is because most methods do some work with the object they're called on, so there needs to be some way for that object to be referred to inside the method. By convention, this first argument is called self inside ...
Get name of current script in Python
...hen used in the main module, this is the name of the script that was originally invoked.
If you want to omit the directory part (which might be present), you can use os.path.basename(__file__).
share
|
...
Why can templates only be implemented in the header file?
...f;
When reading this line, the compiler will create a new class (let's call it FooInt), which is equivalent to the following:
struct FooInt
{
int bar;
void doSomething(int param) {/* do stuff using int */}
}
Consequently, the compiler needs to have access to the implementation of the m...
Using pickle.dump - TypeError: must be str, not bytes
... Jon Clements♦Jon Clements
118k2828 gold badges213213 silver badges250250 bronze badges
25
...
OnMouseMove nFlags的作用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ne MK_CONTROL 0x0008
#define MK_MBUTTON 0x0010
#if(_WIN32_WINNT >= 0x0500)
#define MK_XBUTTON1 0x0020
#define MK_XBUTTON2 0x0040
#endif /* _WIN32_WINNT >= 0x0500 */
#endif /* !NOKEYSTATES */
OnMouseMove nFlags