大约有 40,000 项符合查询结果（耗时：0.0430秒） [XML]
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...0110000 0.623685 sec 16.8126 GB/s
I also tried to:
Reverse the test order, the result is the same so it rules out the cache factor.
Have the for statement in reverse: for (uint64_t i=size/8;i>0;i-=4). This gives the same result and proves the compile is smart enough to not divide size by 8...
How to search a specific value in all tables (PostgreSQL)?
... n.nspname !~ '^(pg_|information_schema)' -- exclude system schemas
ORDER BY n.nspname, c.relname
LOOP
RETURN QUERY EXECUTE format(
'SELECT $1, ctid FROM %s t WHERE t::text ~~ %L'
, _tbl, '%' || _like_pattern || '%')
USING _tbl;
END LOOP;
END
$func$ LANGUAGE...
Correct way to close nested streams and writers in Java [duplicate]
...mplementer a way to track things to close
// assumes this is called in order for nested closeables,
// inner-most to outer-most
protected final <T extends Closeable> T autoClose(T closeable) {
closeables_.add(0, closeable);
return closeable;
}
publi...
Example for boost shared_mutex (multiple reads/one write)?
... the number of readers. Let each reader take one count of the semaphore in order to read, that way they can all read at the same time. Then let the writer take ALL the semaphore counts prior to writing. This causes the writer to wait for all reads to finish and then block out reads while writing.
...
What are the best practices for JavaScript error handling?
...roof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors.
...
Optional query string parameters in ASP.NET Web API
...blic int Skip { get; set; }
public int Take { get; set; }
}
Update:
In order to ensure the values are optional make sure to use reference types or nullables (ex. int?) for the models properties.
share
|
...
TortoiseSVN icons not showing up under Windows 7
...oiseCVS icons. This is because the overlay icons are used in alphabetical order. Again, at your own risk (editing the registry may blow up your computer, yada, yada, yada -- and if you are reading Stack Overflow and using Windows and haven't edited the registry, you are a rare beast indeed), feel f...
Does Java read integers in little endian or big endian?
...
Use the network byte order (big endian), which is the same as Java uses anyway. See man htons for the different translators in C.
share
|
improv...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...ified stamp and row version on my entities, so I was getting them first in order to compare with the inbound headers. Of course, this loaded and tracked the entity that was subsequently being updated.
The fix was simply to change the repository from newing-up a context once in the constructor to ha...
Disable sorting for a particular column in jQuery DataTables
...les example - HTML5 data-* attributes - table options
So you can use data-orderable="false" on the th of the column you don't want to be sortable. For example, the second column "Avatar" in the table below will not be sortable:
<table id="example" class="display" width="100%" data-page-length="...