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Is SecureRandom thread safe?

Is SecureRandom thread safe? That is, after initializing it, can access to the next random number be relied on to be thread safe? Examining the source code seems to show that it is, and this bug report seems to indicate that its lack of documentation as thread safe is a javadoc issue. Has anyone...
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jQuery append() vs appendChild()

... The main difference is that appendChild is a DOM method and append is a jQuery method. The second one uses the first as you can see on jQuery source code append: function() { return this.domManip(arguments, true, function( elem ) { if ( this.nodeType === 1 || this.nod...
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I've programmed in both classic ASP and ASP.NET, and I see different tags inside of the markup for server side code. 2 An...
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Validation failed for one or more entities while saving changes to SQL Server Database using Entity

I want to save my Edit to Database and I am using Entity FrameWork Code-First in ASP.NET MVC 3 / C# but I am getting errors. In my Event class, I have DateTime and TimeSpan datatypes but in my database, I've got Date and time respectively. Could this be the reason? How can I cast to the appropriate ...
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gitignore without binary files

... This solution works like a charm! I don't understand why by unignore all dirs "!*/", it can also unignore subdir's files with an extension? (e.g. aaa/bbb.c) but still ignore subdir's file without extensions. (e.g. aaa/ccc) – dragonxlwang ...
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?

...wing code:- C:\Program Files\Java\jdk1.7.0\bin>keytool -v -list -alias androiddebugkey -keystore debug.keystore -storepass android -keypass android it will output MD5 certificate as well. share | ...
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How can I use different certificates on specific connections?

...ertificate to verify that I'm not encountering a man-in-the-middle attack, and I need to incorporate this certificate into our code in such a way that the connection to the server will be successful. ...
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PHP prepend associative array with literal keys?

... See also array_merge() and its difference from using the + operator: br.php.net/manual/en/function.array-merge.php#92602 – Havenard Sep 3 '09 at 1:33 ...
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Group By Multiple Columns

... @HoGo anonymous typed objects implement their own Equals and GetHashCode methods which is used when grouping the objects. – Byron Carasco Sep 7 '17 at 18:57 ...
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How to express a NOT IN query with ActiveRecord/Rails?

...e come to this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci. 15 Answers ...