大约有 31,840 项符合查询结果（耗时：0.0355秒） [XML]
Select last N rows from MySQL
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SELECT * FROM table ORDER BY id DESC LIMIT 50
save resources make one query, there is no need to make nested queries
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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
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I'd add 'in another session' to that. One common scenario is that you've tested the update in a tool, say SQL Developer or Toad, and have then tried to run it somewhere else while the first session still holds the lock. So you need to commit/rollback the other se...
Detect blocked popup in Chrome
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Just one improvement to InvisibleBacon's snipet (tested in IE9, Safari 5, Chrome 9 and FF 3.6):
var myPopup = window.open("popupcheck.htm", "", "directories=no,height=150,width=150,menubar=no,resizable=no,scrollbars=no,status=no,...
WPF TextBox won't fill in StackPanel
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@peter haven't done wpf stuff in a long time but you might try some sort of grid with the first column set to take up the available space (stackoverflow.com/questions/12432189/…)
– Zach Johnson
Apr 3 ...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
...ed every time the object is saved.
This was definitely a gotcha for me at one point. For reference, the docs are here:
https://docs.djangoproject.com/en/dev/ref/models/fields/#datetimefield
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Disable assertions in Python
...cent call last):
File "<string>", line 1, in <module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<string>", line 1, in <mo...
abort, terminate or exit?
...rs' attention, like Windows Error Reporting, Mac OS X error reports and iPhone application error logs.
– JBRWilkinson
May 14 '10 at 9:42
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Using .otf fonts on web browsers
...only browser that didn't work is FireFox Linux ... Any suggestion for that one ??
– Naruto
Jul 14 '10 at 11:28
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Using jQuery to see if a div has a child with a certain class
... class .filled-text . I'm trying to get jQuery to tell me if #popup has one of these paragraphs in it.
5 Answers
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Difference between CPPFLAGS and CXXFLAGS in GNU Make
...n practice, you need to know what every single project does. Virtually no one uses those defaults built into make, and if you rely on, for example, CPPFLAGS meaning "flags to the C preprocessor" you'll find that the project you care about has used it to mean "flags to the C++ compiler" instead. An...