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Optimal way to concatenate/aggregate strings
...e SQL Database:
STRING_AGG() in PostgreSQL, SQL Server 2017 and Azure SQL
https://www.postgresql.org/docs/current/static/functions-aggregate.html
https://docs.microsoft.com/en-us/sql/t-sql/functions/string-agg-transact-sql
GROUP_CONCAT() in MySQL
http://dev.mysql.com/doc/refman/5.7/en/group-by-f...
Difference between RegisterStartupScript and RegisterClientScriptBlock?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Transfer-Encoding: gzip vs. Content-Encoding: gzip
...r way to do on-the-fly encoding without changing
the resource.
Source: https://issues.apache.org/bugzilla/show_bug.cgi?id=39727#c31
In other words: Don't do on-the-fly Content-Encoding, use Transfer-Encoding instead!
Edit: That is, unless you want to serve gzipped content to clients that only ...
Can I mask an input text in a bat file?
...:: Hidden.cmd
::Tom Lavedas, 02/05/2013, 02/20/2013
::Carlos, 02/22/2013
::https://groups.google.com/forum/#!topic/alt.msdos.batch.nt/f7mb_f99lYI
@Echo Off
:HInput
SetLocal EnableExtensions EnableDelayedExpansion
Set "FILE=%Temp%.\T"
Set "FILE=.\T"
Keys List >"%File%"
Set /P "=Hidden text endin...
Wrapping a C library in Python: C, Cython or ctypes?
...llback code becomes a bottleneck, you'd like to speed it up and/or move it down into C as well. Again, you cannot do that with ctypes. So you have to switch languages at that point and start rewriting parts of your code, potentially reverse engineering your Python/ctypes code into plain C, thus spoi...
Scroll to the top of the page using JavaScript?
... to "smooth"
window.scrollTo({ top: 0, behavior: 'smooth' });
Reference: https://developer.mozilla.org/en-US/docs/Web/API/Window/scrollTo#Example
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How to get the filename without the extension in Java?
...
Below is reference from https://android.googlesource.com/platform/tools/tradefederation/+/master/src/com/android/tradefed/util/FileUtil.java
/**
* Gets the base name, without extension, of given file name.
* <p/>
* e.g. getBaseName("file.t...
Cannot create or edit Android Virtual Devices (AVD) from Eclipse, ADT 22.6
...roblems. Also tested under Debian and same results obtained.
Update 5
At https://code.google.com/p/android/issues/detail?id=66661 android project members conforms the problems and promises to fix by upcoming versions of ADT (22.6.1 - 22.6.3). At the mean time I would suggest to roll-back ADT to a ...
Copying PostgreSQL database to another server
...rom local to remote and the second one is from remote to local. More -> https://www.postgresql.org/docs/9.6/app-pgdump.html
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
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Nov 30 19:18:10 share1 heartbeat: [5509]: info: Heartbeat shutdown in progress. (5509)
Nov 30 19:18:10 share1 heartbeat: [6126]: info: Giving up all HA resources.
ResourceManager(default)[6139]: 2015/11/30_19:18:10 info: Releasing resource group: share1 IPaddr::10.10.10.40/24/eth1 d...