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DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
I got a lot of errors with the message :
19 Answers
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“A lambda expression with a statement body cannot be converted to an expression tree”
In using the EntityFramework , I get the error " A lambda expression with a statement body cannot be converted to an expression tree " when trying to compile the following code:
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Class.forName() vs ClassLoader.loadClass() - which to use for dynamic loading? [duplicate]
When dynamically loading a class, when is it appropriate to use
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Build error: You must add a reference to System.Runtime
....NET MVC 5.1 solution. I'm adding in a bunch of NuGet packages and setting it up with Zurb Foundation etc.
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NoSQL (MongoDB) vs Lucene (or Solr) as your database
With the NoSQL movement growing based on document-based databases, I've looked at MongoDB lately. I have noticed a striking similarity with how to treat items as "Documents", just like Lucene does (and users of Solr).
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Flask vs webapp2 for Google App Engine
...y considering two frameworks: Flask and webapp2 . I'm rather satisfied with built-in webapp framework that I've used for my previous App Engine application, so I think webapp2 will be even better and I won't have any problems with it.
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Rails: What's a good way to validate links (URLs)?
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Validating an URL is a tricky job. It's also a very broad request.
What do you want to do, exactly? Do you want to validate the format of the URL, the existence, or what? There are several possibilities, depending on what you want to do.
A regular expression c...
Positioning MKMapView to show multiple annotations at once
I've got several annotations I want to add to my MKMapView (it could 0-n items, where n is generally around 5). I can add the annotations fine, but I want to resize the map to fit all annotations onscreen at once, and I'm not sure how to do this.
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There is no ListBox.SelectionMode=“None”, is there another way to disable selection in a listbox?
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Approach 1 - ItemsControl
Unless you need other aspects of the ListBox, you could use ItemsControl instead. It places items in the ItemsPanel and doesn't have the concept of selection.
<ItemsControl ItemsSource="{Binding MyItems}" /&g...
jQuery trigger file input
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This is due to a security restriction.
I found out that the security restriction is only when the <input type="file"/> is set to display:none; or is visbilty:hidden.
So i tried positioning it outside the viewport by setting position:absolu...