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How to list of all the tables defined for the database when using active record?
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Call ActiveRecord::ConnectionAdapters::SchemaStatements#tables. This method is undocumented in the MySQL adapter, but is documented in the PostgreSQL adapter. SQLite/SQLite3 also has the method implemented, but undocumented...
What's the concept of and differences between Framebuffer and Renderbuffer in OpenGL?
...ly. Firstly:
The final rendering destination of the OpenGL pipeline is called [the] framebuffer.
Whereas:
Renderbuffer Object
In addition, renderbuffer object is newly introduced for offscreen rendering. It allows to render a scene directly to a renderbuffer object, instead of rendering ...
Advantages of Antlr (versus say, lex/yacc/bison) [closed]
...rser is doing by reading its code. Also, recursive descent parsers are typically faster than table driven ones. However, for very complex languages, the code footprint will be larger. This was a problem in the 1960s and 1970s. Back then, only relatively small languages like Pascal for instance were ...
jquery $(window).height() is returning the document height
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With no doctype tag, Chrome reports the same value for both calls.
Adding a strict doctype like <!DOCTYPE html> causes the values to work as advertised.
The doctype tag must be the very first thing in your document. E.g., you can't have any text before it, even if it doesn't r...
ASP.NET MVC 4 Custom Authorize Attribute with Permission Codes (without roles)
...ing.Join("", GetUserRights(httpContext.User.Identity.Name.ToString())); // Call another method to get rights of the user from DB
return privilegeLevels.Contains(this.AccessLevel);
}
}
You can redirect an unauthorised user in your custom AuthorisationAttribute by overriding ...
Best approach to converting Boolean object to string in java
...first test for null and later invoke toString() method on your object.
Calling Boolean.toString(b) will invoke
public static String toString(boolean b) {
return b ? "true" : "false";
}
which is little slower than b.toString() since JVM needs to first unbox Boolean to boolean which will b...
Mounting multiple volumes on a docker container?
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Okay, so i'm doing this the exact same way but when i try calling the second one it says that it isn't found.
– momal
Mar 23 '15 at 6:08
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Batch not-equal (inequality) operator
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NEQ is usually used for numbers and == is typically used for string comparison.
I cannot find any documentation that mentions a specific and equivalent inequality operand for string comparison (in place of NEQ). The solution using IF NOT == seems the most sound approac...
Pass mouse events through absolutely-positioned element
...on would be to register a click event handler for the absolute element and call the click handler for the blue div, causing them both to flash.
Due to the way events bubble up through the DOM I'm not sure there is a simpler answer for you, but I'm very curious if anyone else has any tricks I don't ...
creating list of objects in Javascript
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var list = [
{ date: '12/1/2011', reading: 3, id: 20055 },
{ date: '13/1/2011', reading: 5, id: 20053 },
{ date: '14/1/2011', reading: 6, id: 45652 }
];
and then access it:
alert(list[1].date);
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