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Create a variable name with “paste” in R?
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How do you know when to use fold-left and when to use fold-right?
I'm aware that fold-left produces left-leaning trees and fold-right produces right-leaning trees, but when I reach for a fold, I sometimes find myself getting bogged down in headache-inducing thought trying to determine which kind of fold is appropriate. I usually end up unwinding the entire proble...
Django “login() takes exactly 1 argument (2 given)” error
I'm trying to store the user's ID in the session using django.contrib.auth.login . But it is not working not as expected.
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Using helpers in model: how do I include helper dependencies?
...iting a model that handles user input from a text area. Following the advice from http://blog.caboo.se/articles/2008/8/25/sanitize-your-users-html-input , I'm cleaning up the input in the model before saving to database, using the before_validate callback.
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How to make a select with array contains value clause in psql
I have column arr which is of type array .
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Java packages com and org
What are the meaning of the packages org and com in Java?
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C# - Attribute to Skip over a Method while Stepping in Debug Mode
Is there an attribute I can use on a method so that when stepping through some code in Debug mode the Debugger stays on the outside of the method?
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How to read environment variables in Scala
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What's the difference between process.cwd() vs __dirname?
What's the difference between
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What is this: [Ljava.lang.Object;?
I get this when I call toString on an object I received from a function call. I know the type of the object is encoded in this string, but I don't know how to read it.
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