大约有 644 项符合查询结果（耗时：0.0280秒） [XML]
Database Design for Revisions?
...cture change:
insert into EmployeeHistory select * from Employe where ID = XX
Don't forget to use transactions!
As for the scaling, this solution is very efficient, since you don't transform any data from XML back and forth, just copying whole table rows - very simple queries, using indices - very ...
How to percent-encode URL parameters in Python?
...ote(string[, safe])
Replace special characters in string
using the %xx escape. Letters, digits,
and the characters '_.-' are never
quoted. By default, this function is
intended for quoting the path section
of the URL.The optional safe parameter
specifies additional characters that
...
When and how should I use a ThreadLocal variable?
...yError: PermGen space and after some googling will probably just increase -XX:MaxPermSize instead of fixing the bug.
If you do end up experiencing these problems, you can determine which thread and class is retaining these references by using Eclipse's Memory Analyzer and/or by following Frank Kiev...
How to overcome root domain CNAME restrictions?
...E, the NS entries are ignored. Therefore all the
hosts in the podunk.xx domain are ignored as well!
References:
http://tools.ietf.org/html/rfc1912 section '2.4 CNAME Records'
http://www.faqs.org/rfcs/rfc1034.html section '3.6.2. Aliases and canonical names'
...
How can I find where I will be redirected using cURL?
...LINFO_HTTP_CODE);
curl_close($ch);
// if it's not a redirection (3XX), move along
if ($httpStatus < 300 || $httpStatus >= 400)
return $url;
// look for a location: header to find the target URL
if(preg_match('/location: (.*)/i', $result, $r)) {
$location =...
How can I safely encode a string in Java to use as a filename?
...Use URL encoding (java.net.URLEncoder) to replace special characters with %xx. Note that you take care of the special cases where the string equals ., equals .. or is empty!¹ Many programs use URL encoding to create file names, so this is a standard technique which everybody understands.
Irreversi...
Android: Background Image Size (in Pixel) which Support All Devices
...to read
http://developer.android.com/guide/practices/screens_support.html
xxxhdpi: 1280x1920 px
xxhdpi: 960x1600 px
xhdpi: 640x960 px
hdpi: 480x800 px
mdpi: 320x480 px
ldpi: 240x320 px
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imp...
Should import statements always be at the top of a module?
...ondition]:
import foo as plugin_api
else:
import bar as plugin_api
xx = plugin_api.Plugin()
[...]
There are probably other situations where you might place imports in other parts in the code.
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...
Passing parameters to a Bash function
...
Miss out the parens and commas:
myBackupFunction ".." "..." "xx"
and the function should look like this:
function myBackupFunction() {
# here $1 is the first parameter, $2 the second etc.
}
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...
jQuery select all except first
...ld child-0'>visible#1</div>
<div class='child child-1'>xx</div>
<div class='child child-2'>yy</div>
</div>
<div class='some-group'>
<div class='child child-0'>visible#2</div>
<div class='child child-1'>aa</div&...
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