大约有 30,000 项符合查询结果（耗时：0.0654秒） [XML]
MySQL: Insert record if not exists in table
...actually do what you were attempting:
CREATE TABLE `table_listnames` (
`id` int(11) NOT NULL auto_increment,
`name` varchar(255) NOT NULL,
`address` varchar(255) NOT NULL,
`tele` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB;
Insert a record:
INSERT INTO table_listnames (n...
Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...umentation has to say:
By default the heap dump is created in
a file called java_pid.hprof in the
working directory of the VM, as in the
example above. You can specify an
alternative file name or directory
with the -XX:HeapDumpPath= option. For
example -XX:HeapDumpPath=/disk2/dumps
...
Get path from open file in Python
If I have an opened file, is there an os call to get the complete path as a string?
4 Answers
...
How to retrieve a user environment variable in CMake (Windows)
... time. If CMake re-configures with one of the consecutive builds (you just call e.g. make, one CMakeLists.txt was changed and CMake runs through the generation process again), the user defined environment variable may not be there anymore (in comparison to system wide environment variables).
So I t...
React.js: onChange event for contentEditable
...
nice but I guess the call to this.getDOMNode().innerHTML in shouldComponentUpdate is not very optimized right
– Sebastien Lorber
Jun 28 '14 at 14:01
...
How to urlencode data for curl command?
...ere a version which uses hexdump instead of xxd and allows to avoid the tr call:
echo -ne 'some random\nbytes' | hexdump -v -e '/1 "%02x"' | sed 's/\(..\)/%\1/g'
share
|
improve this answer
...
Fixing slow initial load for IIS
...
Internet Information Services (IIS) application pools can be
periodically recycled to avoid unstable states that can lead to
application crashes, hangs, or memory leaks.
As long as app pool recycling is left on, it should be enough.
But if you really want top notch performance for most co...
Dual emission of constructor symbols
...tructor". It does everything the complete object constructor does, plus it calls operator new to actually allocate the memory... but apparently this is not usually seen.
If you have no virtual base classes, [the first two] are are
identical; GCC will, on sufficient optimization levels, actually a...
iOS 6: How do I restrict some views to portrait and allow others to rotate?
...ory and the view controller that you want to be able to rotate (which I'll call RotatingViewController) to your highest level view controller, which should contain your navigation controller. In that view controller, implement shouldAutorotate as follows. Note that this should not be the same view c...
jQuery append() - return appended elements
I'm using jQuery.append() to add some elements dynamically. Is there any way to get a jQuery collection or array of these newly inserted elements?
...