大约有 43,000 项符合查询结果（耗时：0.0936秒） [XML]
How does one write code that best utilizes the CPU cache to improve performance?
...aiting for a memory request to be fulfilled (avoiding the memory latency), and as a second effect, possibly to reduce the overall amount of data that needs to be transfered (preserving memory bandwidth).
Techniques for avoiding suffering from memory fetch latency is typically the first thing to con...
How can I profile Python code line-by-line?
I've been using cProfile to profile my code, and it's been working great. I also use gprof2dot.py to visualize the results (makes it a little clearer).
...
How to check which locks are held on a table
...first block that caused the other blocks.
Edit to add comment from @MikeBlandford:
The blocked column indicates the spid of the blocking process. You can run kill {spid} to fix it.
share
|
im...
Is there any way to put malicious code into a regular expression?
...ological patterns that go exponential — or even super‐exponential! — and so appear to take forever to solve. These may only show up on particular input data, but one can generally create one wherein this doesn’t matter.
Which ones these are will depend somewhat on how smart the regex compil...
Update Item to Revision vs Revert to Revision
I've started to use Subversion with TortoiseSVN. If I open up the log and right click on an old revision I see two options that sound like they roll back to an older version: "Update item to revision" and "Revert to this revision".
...
Should I return a Collection or a Stream?
...d collection will be. It depends on whether the result changes over time, and how important consistency of the returned result is. And it depends very much on how the user is likely to use the answer.
First, note that you can always get a Collection from a Stream, and vice versa:
// If API returns...
How to filter SQL results in a has-many-through relation
Assuming I have the tables student , club , and student_club :
13 Answers
13
...
How to overcome TypeError: unhashable type: 'list'
...e split the file on `x`, since the part before the x will be
# the key and the part after the value
line = line.split('x')
# Take the line parts and strip out the spaces, assigning them to the variables
# Once you get a bit more comfortable, this works as well:
# key, value = [x....
SQL Server indexes - ascending or descending, what difference does it make?
...ch column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be just as fast either way? What difference does it make which order I choose?
...
Invalidating JSON Web Tokens
...
I too have been researching this question, and while none of the ideas below are complete solutions, they might help others rule out ideas, or provide further ones.
1) Simply remove the token from the client
Obviously this does nothing for server side security, but it...