大约有 23,000 项符合查询结果（耗时：0.0411秒） [XML]
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...is:
This shows the result of benchmark runs on the following code:
uint64_t do_Ndec(int thread, int loop_count)
{
uint64_t start;
uint64_t end;
int __d0;
asm volatile ("rdtsc\n\tshl $32, %%rdx\n\tor %%rdx, %0" : "=a" (start) : : "%rdx");
mutex.lock();
mutex.unlock();
asm volatile ...
Python - List of unique dictionaries
...ohn La Rooy - how could one use the same to remove dictionarys from a list based on multiple attributes , tried this but seems not to work > {v['flight']['lon']['lat']: v for v in stream}.values()
– Jorge Vidinha
Sep 13 '15 at 10:04
...
How can I split a string into segments of n characters?
...unctions, you can ignore these.
function textToBin(text) { return textToBase(text, 2, 8); }
function textToHex(t, w) { return pad(textToBase(t,16,2), roundUp(t.length, w)*2, '00'); }
function pad(val, len, chr) { return (repeat(chr, len) + val).slice(-len); }
function print(text) { docum...
How can I randomize the lines in a file using standard tools on Red Hat Linux?
...
64
And a Perl one-liner you get!
perl -MList::Util -e 'print List::Util::shuffle <>'
It u...
How do I stop Notepad++ from showing autocomplete for all words in the file
...le
Suggestion with the arguments of functions (specific to the language)
Based on what you write, it seems what you want is auto-completion on function only + suggestion on arguments.
To do that, you just need to change a setting.
Go to Settings > Preferences... > Auto-completion
Check En...
What is the correct way to restore a deleted file from SVN?
...6:12
BCS
64.2k6161 gold badges175175 silver badges272272 bronze badges
answered Jan 29 '09 at 5:01
Sean Bright...
what is faster: in_array or isset? [closed]
...
Jason McCrearyJason McCreary
64.4k2020 gold badges122122 silver badges166166 bronze badges
...
How to call a PHP function on the click of a button
...and PHP serving as the reply to such HTML forms like printing some results based on whether a button in a form is clicked?
– KPMG
Apr 20 '19 at 9:10
...
How to get the system uptime in Windows? [closed]
...d -eq 6005 -or $_.Id -eq 6006}
6: Programmatically, by using GetTickCount64
GetTickCount64 retrieves the number of milliseconds that have elapsed since the system was started.
7: By using WMI
wmic os get lastbootuptime
8: The new uptime.exe for Windows XP and up
Like the tool from Micros...
IE9 border-radius and background gradient bleeding
...ed correctly to the border radius in IE9. This is lighter weight than SVG-based proposals but as a downside, is not resolution-independent. Another advantage: works with your current HTML/CSS and does not require wrapping with additional elements.
I grabbed a random 20x20 gradient PNG via a web s...