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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
I'm trying to understand the functionalities of these methods. Could you provide me a simple usecase to understand theirs semantics?
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Want to find records with no associated records in Rails
...s is still pretty close to SQL, but it should get everyone with no friends in the first case:
Person.where('id NOT IN (SELECT DISTINCT(person_id) FROM friends)')
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What is the purpose of Looper and how to use it?
...documentation but I am unable to completely understand it.
I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpose of Looper and also by giving a simple example if possible?
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Should I store generated code in source control
This is a debate I'm taking a part in. I would like to get more opinions and points of view.
27 Answers
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How to organize a node app that uses sequelize?
I am looking for an example nodejs app that uses the sequelize ORM.
10 Answers
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Getting a map() to return a list in Python 3.x
I'm trying to map a list into hex, and then use the list elsewhere. In python 2.6, this was easy:
9 Answers
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PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
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How to set the matplotlib figure default size in ipython notebook?
I use "$ipython notebook --pylab inline" to start the ipython notebook. The display matplotlib figure size is too big for me, and I have to adjust it manually. How to set the default size for the figure displayed in cell?
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How can I get my webapp's base URL in ASP.NET MVC?
How can I quickly determine what the root URL is for my ASP.NET MVC application? I.e., if IIS is set to serve my application at http://example.com/foo/bar , then I'd like to be able to get that URL in a reliable way that doesn't involve getting the current URL from the request and chopping it up i...
Getting the name of a child class in the parent class (static context)
I'm building an ORM library with reuse and simplicity in mind; everything goes fine except that I got stuck by a stupid inheritance limitation. Please consider the code below:
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