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Counting DISTINCT over multiple columns
...s an even smaller chance but still not zero. If those two Ids were int's (32b) then a "lossless hash" could combine them into an bigint (64b) like Id1 << 32 + Id2.
– crokusek
Jan 31 '14 at 19:35
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Get operating system info
...ay('(windows)([0-9]{1,2}\.[0-9]{1,2})', 'Windows');
$ros[] = array('win32', 'Windows');
$ros[] = array('(java)([0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,2})', 'Java');
$ros[] = array('(Solaris)([0-9]{1,2}\.[0-9x]{1,2}){0,1}', 'Solaris');
$ros[] = array('dos x86', 'DOS');
$ros[] = array('un...
How to get the currently logged in user's user id in Django?
...reference.
– x-yuri
Dec 8 '18 at 20:32
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show 1 more comment
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Popup弹出菜单扩展 · App Inventor 2 中文网
...教育版 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
Received fatal alert: handshake_failure through SSLHandshakeException
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Toastrackenigma
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answered Jun 15 '11 at 6:36
Vineet ReynoldsVineet Reynolds
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How to specify a multi-line shell variable?
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dogbanedogbane
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How to find if a native DLL file is compiled as x64 or x86?
... Application can handle large (>2GB) addresses
DLL
32-bit
Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file acrdlg.dll
PE signature found
File Type: DLL
FILE HEADER VALUES
14C machine...
MySQL “Group By” and “Order By”
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32
As pointed in a reply already, the current answer is wrong, because the GROUP BY arbitrarily se...
Rails new vs create
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Simple insecure two-way data “obfuscation”?
...ork with byte arrays.
NOTE: you should use different values in the Key (32 bytes) and Vector (16 bytes) arrays! You wouldn't want someone to figure out your keys by just assuming that you used this code as-is! All you have to do is change some of the numbers (must be <= 255) in the Key and V...