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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...hat ADD PRIMARY KEY also creates a NOT NULL constraint (tested in postgres 9.3) as expected and wanted.
– Jared Beck
Feb 7 '14 at 20:36
19
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Why use softmax as opposed to standard normalization?
...r information and a formal derivation please refer to CS229 lecture notes (9.3 Softmax Regression).
Additionally, a useful trick usually performs to softmax is: softmax(x) = softmax(x+c), softmax is invariant to constant offsets in the input.
...
Save PL/pgSQL output from PostgreSQL to a CSV file
... @IMSoP: How would you add a COPY statement to an sql (on postgres 9.3) function? So the query gets saved to a .csv file?
– jO.
Nov 12 '13 at 21:24
12
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How do I make an attributed string using Swift?
...or.lightGrayColor(),
NSFontAttributeName: AttriFont])
Xcode 9.3 version:
let attriString = NSAttributedString(string:"attriString", attributes:
[NSAttributedStringKey.foregroundColor: UIColor.lightGray,
NSAttributedStringKey.font: AttriFont])
Xcode 10, iOS 12, Swift 4:...
How to add row in JTable?
...);
model.addColumn("Col2");
// Append a row
model.addRow(new Object[]{"v1", "v2"});
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What rules does software version numbering follow? [duplicate]
...ants to versioning. It all boils down to personal preference.
For the "1.3v1.1", that may be two different internal products, something that would be a shared library / codebase that is rev'd differently from the main product; that may indicate version 1.3 for the main product, and version 1.1 of t...
Adding attribute in jQuery
...
best solution: from jQuery v1.6 you can use prop() to add a property
$('#someid').prop('disabled', true);
to remove it, use removeProp()
$('#someid').removeProp('disabled');
Reference
Also note that the .removeProp()
method should not be ...
How do I exit the results of 'git diff' in Git Bash on windows? [duplicate]
...4.0, although it took a few seconds to complete.
– j4v1
Apr 27 '15 at 14:25
1
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“历史遗留”漏洞：浅析新型SSL/TLS漏洞FREAK - 创意 - 清泛网 - 专注C/C++及内核技术
...微软的研究人员共同发现的。为此，他们曾研究了OpenSSL v1.01k及之前的协议版本，以及苹果的安全传输机制。
90年代的暗箱操作
90年代，美国政府要求在货物出口前，要求出口产品和设备进行“暗箱操作”——必须使用弱加密...
一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...windows>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity type="win32" name="Microsoft.VC80.ATL" processorArchitecture="x86" publicKeyToken="1fc8b3b9a1e18e3b"></assemblyIdentity>
<bindingRedirect oldVersion="8.0...