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How can I safely create a nested directory?

...ant way to check if the directory a file is going to be written to exists, and if not, create the directory using Python? Here is what I tried: ...
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What is the difference between NULL, '\0' and 0?

...e appear to be differences between various values of zero -- NULL , NUL and 0 . 11 Answers ...
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What are the best JVM settings for Eclipse? [closed]

...gain: "eclipse.ini take 3" the settings strike back! Eclipse Helios 3.6 and 3.6.x settings alt text http://www.eclipse.org/home/promotions/friends-helios/helios.png After settings for Eclipse Ganymede 3.4.x and Eclipse Galileo 3.5.x, here is an in-depth look at an "optimized" eclipse.ini settin...
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Why is it said that “HTTP is a stateless protocol”?

...ocket. That is solely a performance thing, intended to minimize the time/bandwidth that'd otherwise be spent reestablishing a connection for each request. As far as HTTP is concerned, they are all still separate requests and must contain enough information on their own to fulfill the request. Tha...
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What to put in a python module docstring? [closed]

Ok, so I've read both PEP 8 and PEP 257 , and I've written lots of docstrings for functions and classes, but I'm a little unsure about what should go in a module docstring. I figured, at a minimum, it should document the functions and classes that the module exports, but I've also seen a few mod...
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jQuery vs document.querySelectorAll

I heard several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM: you can use CSS queries to create complex queries that would be very hard to do in regular javascript . However , as far as I know, you can achieve the same result with document.querySele...
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What is “overhead”?

I am a student in Computer Science and I am hearing the word "overhead" a lot when it comes to programs and sorts. What does this mean exactly? ...
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What is the difference between Left, Right, Outer and Inner Joins?

... Simple Example: Lets say you have a Students table, and a Lockers table. In SQL, the first table you specify in a join, Students, is the LEFT table, and the second one, Lockers, is the RIGHT table. Each student can be assigned to a locker, so there is a LockerNumber column in...
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What is the difference between a directory and a folder?

Most people use the terms "folder" and "directory" interchangeably. From a programmer point of view, is there a difference, and if so, what is it? Does it depend on the OS, or is there a broad, general consensus? This at least suggests that there is a difference. ...
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Why is MATLAB so fast in matrix multiplication?

I am making some benchmarks with CUDA, C++, C#, Java, and using MATLAB for verification and matrix generation. When I perform matrix multiplication with MATLAB, 2048x2048 and even bigger matrices are almost instantly multiplied. ...