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Is there any kind of hash code function in JavaScript?
Basically, I'm trying to create an object of unique objects, a set. I had the brilliant idea of just using a JavaScript object with objects for the property names. Such as,
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SqlException from Entity Framework - New transaction is not allowed because there are other threads
I am currently getting this error:
20 Answers
20
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When to use EntityManager.find() vs EntityManager.getReference() with JPA
I have come across a situation (which I think is weird but is possibly quite normal) where I use the EntityManager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table.
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Use cases for the 'setdefault' dict method
The addition of collections.defaultdict in Python 2.5 greatly reduced the need for dict 's setdefault method. This question is for our collective education:
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How can I create a directly-executable cross-platform GUI app using Python?
Python works on multiple platforms and can be used for desktop and web applications, thus I conclude that there is some way to compile it into an executable for Mac, Windows and Linux.
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Rails and PostgreSQL: Role postgres does not exist
I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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Update Row if it Exists Else Insert Logic with Entity Framework
Does anyone have suggestions on the most efficient way to implement "update row if it exists else insert" logic using Entity Framework?
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How do I check whether a jQuery element is in the DOM?
Let's say that I define an element
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'ssh-keygen' is not recognized as an internal or external command
I run git push -u origin master
14 Answers
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Should I inherit from std::exception?
I've seen at least one reliable source (a C++ class I took) recommend that application-specific exception classes in C++ should inherit from std::exception . I'm not clear on the benefits of this approach.
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