大约有 30,000 项符合查询结果（耗时：0.0314秒） [XML]
Which is faster: multiple single INSERTs or one multiple-row INSERT?
...
https://dev.mysql.com/doc/refman/8.0/en/insert-optimization.html
The time required for inserting a row is determined by the following factors, where the numbers indicate approximate proportions:
Connecting: (3)
Sending query to server: (2)
Parsing query: (2)
Inserting row: (1 × ...
How to exclude file only from root folder in Git
...t how to ignore some file.ext in some particular directory and at the same time to NOT ignore it everywhere else then put this into /home/me/.gitignore file: /home/me/path/to/my/project/some/folder/file.ext OR file.ext to ignore the file everywhere and then in the /home/me/path/to/my/project/some/fo...
How to get string objects instead of Unicode from JSON?
...ith the ignore_dicts parameter to _byteify, which gets passed to it at all times except when object_hook passes it a new dict to byteify. The ignore_dicts flag tells _byteify to ignore dicts since they already been byteified.
Finally, our implementations of json_load_byteified and json_loads_byteif...
How can I count text lines inside an DOM element? Can I?
...-height (e.g. normal or inherit), it just uses the font-size multiplied by 1.2. Perhaps someone else can suggest a reliable way to detect the pixel value in those cases.
Other than that, it has been able to correctly handle most of the styles and cases I have thrown at it.
jsFiddle for playing aro...
Remove all subviews?
... [[mySuperView.subviews objectAtIndex:i] removeFromSuperview];
SWIFT 1.2
for var i=mySuperView.subviews.count-1; i>=0; i-- {
mySuperView.subviews[i].removeFromSuperview();
}
or (less efficient, but more readable)
for subview in mySuperView.subviews.reverse() {
subview.removeFrom...
How to use SCNetworkReachability in Swift
... your connection and handle errors if it fails. Making a connection can at times fire up the dormant offline radios.
The one valid use of Reachability is to use it to notify you when a network transitions from offline to online. At that point you should retry failed connections.
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What are the “must have” jQuery plugins? [closed]
... That is pretty impressive - I thought those we're images the first time I saw them.
– Hugoware
Nov 6 '08 at 18:52
4
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Professional jQuery based Combobox control? [closed]
...ry 1.4.x ... as with most plugins that have not been maintained for a long time...
– Lukas Eder
Mar 2 '11 at 8:22
3
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What version of javac built my jar?
...s to extract one or more classes from the jar. For example:
$ jar xf log4j-1.2.15.jar
On Linux, Mac OS X or Windows with Cygwin installed, the file(1) command knows the class version.
$ file ./org/apache/log4j/Appender.class
./org/apache/log4j/Appender.class: compiled Java class data, version 45.3
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How to disable Golang unused import error
...ables the errors. That way it's easy to develop using go run and when it's time to build for production, you are still forced to clean up your code.
– kramer65
Sep 8 '17 at 8:58
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