大约有 44,000 项符合查询结果（耗时：0.0730秒） [XML]
MySQL Query to select data from last week?
Hi I have a table with a date field and some other information.
I want to select all entries from the past week, (week start from Sunday).
...
Is volatile expensive?
...LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad and LoadStore are effectively no-ops on X86 CPUs. Does this mean that volatile read operations can be done without a explicit cache invalidation on x86, and is as fast as a normal variable read (disregarding the reordering co...
std::wstring VS std::string
I am not able to understand the differences between std::string and std::wstring . I know wstring supports wide characters such as Unicode characters. I have got the following questions:
...
Loop backwards using indices in Python?
...y it's 10 MB, then creating the reverse indices upfront would take seconds and use up over 50 MB of memory. Using a reversed generator would take milliseconds and only use up a few bytes of memory.
– Blixt
Sep 29 '19 at 6:23
...
Replace first occurrence of pattern in a string [duplicate]
... I used this kind of code in a heavy loop, it consumes a lot of CPU and memory. It must be avoided in these kind of loops.
– Ali Erdoğan
Feb 14 '16 at 12:44
...
How to disable right-click context-menu in JavaScript [duplicate]
...
Capture the onContextMenu event, and return false in the event handler.
You can also capture the click event and check which mouse button fired the event with event.button, in some browsers anyway.
...
Unable to start debugging because the object invoked has disconnected from its clients
... the problem.
Some from the answer:
Check which files were changed (why and how) after update from a source control engine
Review the list of extensions and plugins. Try to disable all or some of them
Close Visual Studio and kill all the development processes: devenv, mspdbsrv, vcpkgsrv, msbuild,...
Floating point vs integer calculations on modern hardware
I am doing some performance critical work in C++, and we are currently using integer calculations for problems that are inherently floating point because "its faster". This causes a whole lot of annoying problems and adds a lot of annoying code.
...
What are the differences between “git commit” and “git push”?
...y.
Here is a nice picture from Oliver Steele, that explains the git model and the commands:
Read more about git push and git pull on GitReady.com (the article I referred to first)
share
|
improv...
What to put in a python module docstring? [closed]
Ok, so I've read both PEP 8 and PEP 257 , and I've written lots of docstrings for functions and classes, but I'm a little unsure about what should go in a module docstring. I figured, at a minimum, it should document the functions and classes that the module exports, but I've also seen a few mod...