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How can I remove duplicate rows?
...most efficient way to remove duplicate rows on my old mariadb version 10.1.xx. thank you!
– Drunken M
Feb 11 at 22:47
...
java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...方式的数据库（而不是连续不断的更新数据库），被重复搜索出相同结果的，就能够通过执行缓存方式改进其性能和伸缩性。
官方网站 http://jakarta.apache.org/turbine/jcs/
EHCache
EHCache 是一个纯java的...
Http Basic Authentication in Java using HttpClient?
... it might be caused by your client, the server shouldn't fail this way (a 4xx error code would be more appropriate if the request is incorrect).
I think setDoAuthentication(true) is the default (not sure). What could be useful to try is pre-emptive authentication works better:
client.getParams().se...
How do you post to an iframe?
...t;/form>
<iframe name="output_frame" src="" id="output_frame" width="XX" height="YY">
</iframe>
Advanced iframe target use
This property can also be used to produce an ajax like experience, especially in cases like file upload, in which case where it becomes mandatory t...
How to generate service reference with only physical wsdl file
I have been creating and consuming web services for years and always have been able to use Visual Studio to create a service reference from the client. I have a third party service I need to work with and they refuse to open their security so I can see the wsdl and make the service reference. It's a...
What are the dark corners of Vim your mom never told you about? [closed]
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@maximus: vim replaces % by the name of the current buffer/file.
– migu
Sep 2 '13 at 20:42
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“Conversion to Dalvik format failed with error 1” on external JAR
...android target was not the same in both project: android:targetSdkVersion="xx"
– Andreas Mattisson
Sep 21 '14 at 10:33
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show 2 more comment...
The maximum value for an int type in Go
...
https://groups.google.com/group/golang-nuts/msg/71c307e4d73024ce?pli=1
The germane part:
Since integer types use two's complement arithmetic, you can infer the
min/max constant values for int and uint. For example,
const MaxUint = ^uint(0)
const MinUint = 0
const MaxInt = int...
What algorithms compute directions from point A to point B on a map?
...does work, with a couple of modifications:
Instead of doing Dijkstra's once from source to dest, you start at each end, and expand both sides until they meet in the middle. This eliminates roughly half the work (2*pi*(r/2)^2 vs pi*r^2).
To avoid exploring the back-alleys of every city between your...
Static fields on a null reference in Java
...ss rather than the objects of this class. The following code attempts to access a static field on a null reference.
5 Ans...