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...ay","args":{}}]},{"procedure": "setOperator","params":["op"],"do":[{"if":{"and":[{"neq":[{"get_var": "global currentNumber"},""]},{"neq":[{"get_var": "global previousNumber"},""]]}},"then":[{"call_proc": "calculate","args":{}}]},{"if":{"neq":[{"get_var": "global currentNumber"},""]},"then":[{"set_va...
How do I sort one vector based on values of another
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This is pretty and shows a good understanding of R's built-ins. +1
– Godeke
Oct 15 '09 at 15:21
6
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How to duplicate virtualenv
...t to install (or have already installed in case of file generated by pip), and what versions they're at.
To generate a requirements file, go into your original virtualenv, and run:
pip freeze > requirements.txt
This will generate the requirements.txt file for you. If you open that file up in ...
Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
I stumbled over node.js sometime ago and like it a lot. But soon I found out that it lacked badly the ability to perform CPU-intensive tasks. So, I started googling and got these answers to solve the problem: Fibers, Webworkers and Threads (thread-a-gogo). Now which one to use is a confusion and one...
What is “loose coupling?” Please provide examples
... uses a CartContents class to keep track of the items in the shopping cart and an Order class for processing a purchase. The Order needs to determine the total value of the contents in the cart, it might do that like so:
Tightly Coupled Example:
public class CartEntry
{
public float Price;
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Why do loggers recommend using a logger per class?
...u still do this, but you can do it once per class instead of once per call and eliminate a serious performance problem.
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Update just one gem with bundler
I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:
8 A...
Find the number of downloads for a particular app in apple appstore [closed]
...als the info. The best you can do is find a few companies that are sharing and then extrapolate based on app ranking (which is available publicly). The best you'll get is a ball park estimate.
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How to use int.TryParse with nullable int? [duplicate]
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Like Daniel's code, but fixed in terms of the second argument, trimming, and avoiding comparisons with Boolean constants:
int tmp;
if (!int.TryParse(strValue.Trim(), out tmp))
{
break;
}
intVal = tmp;
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Adding a UILabel to a UIToolbar
...ll exists -- it's self.titleLabel. This example needs a property declared and synthesized for UILabel *titleLabel, but that code isn't shown. If you have access to the object (probably a UIViewController) that runs this code, you can access its titleLabel. E.g., you could add a method on the view...