大约有 30,000 项符合查询结果（耗时：0.0377秒） [XML]
How to 'insert if not exists' in MySQL?
...se
repeated executions will not die due to ‘duplicate
primary key’ errors.
Method 1: using REPLACE
It’s very simple:
REPLACE INTO `transcripts`
SET `ensembl_transcript_id` = 'ENSORGT00000000001',
`transcript_chrom_start` = 12345,
`transcript_chrom_end` = 12678;
If the r...
What is the purpose of the “final” keyword in C++11 for functions?
...ides base::f
};
struct mostderived : derived {
//void f(); // error: cannot override!
};
share
|
improve this answer
|
follow
|
...
Rails DB Migration - How To Drop a Table?
...igration is broken after running this command. Can not CREATE, DROP...ETC. ERROR SQLite3::SQLException: no such table: accruals: DROP TABLE "sometable"
– zee
Aug 23 '17 at 14:13
...
UIScrollView Scrollable Content Size Ambiguity
...
This error took me a while to track down, initially I tried pinning the ScrollView's size but the error message clearly says "content size". I made sure everything I pinned from the top of the ScrollView was also pinned to the bo...
How to know that a string starts/ends with a specific string in jQuery?
...n jQuery I tried str.startsWith('some checking string ..') this gave me an error saying, startsWith method not found.. :( but str.match worked. Thanks for your answer
– Débora
Apr 22 '12 at 7:01
...
Vagrant stuck connection timeout retrying
...
The GUI showed me the following error: VT-x/AMD-V hardware acceleration is not available on your system. Your 64-bit quest will fail to detect a 64-bit CPU and will not be able to boot
– SKuijers
Jan 9 '15 at 11:34
...
How do I convert seconds to hours, minutes and seconds?
...
In python 3.5.2, I get a TypeError. I'm formatting a time.time()-start variable. Any insight? TypeError: non-empty format string passed to object.__format__
– medley56
Sep 25 '17 at 16:40
...
Creating a JSON response using Django and Python
...go.http import HttpResponse
response_data = {}
response_data['result'] = 'error'
response_data['message'] = 'Some error message'
Pre-Django 1.7 you'd return it like this:
return HttpResponse(json.dumps(response_data), content_type="application/json")
For Django 1.7+, use JsonResponse as shown ...
Print PHP Call Stack
...
To log the trace
$e = new Exception;
error_log(var_export($e->getTraceAsString(), true));
Thanks @Tobiasz
share
|
improve this answer
|
...
Hidden Features of ASP.NET [closed]
... not found");
This will be caught by ASP.NET which will return the customErrors page. Learned about this one in a recent .NET Tip of the Day Post
share
answered Sep 10 '08 a...