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Ruby, Difference between exec, system and %x() or Backticks
...tem
The system method calls a system program. You have to provide the command as a string argument to this method. For example:
>> system("date")
Wed Sep 4 22:03:44 CEST 2013
=> true
The invoked program will use the current STDIN, STDOUT and STDERR objects of your Ruby program. In fact...
Rails layouts per action?
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Cool, thanks. And in case someone wants to do simpler things with one-liner the following is possible. Its easy to read and place in top of the controller. --- layout Proc.new{ ['index', 'new', 'create'].include?(action_name) ? 'some_layou...
How can I change IIS Express port for a site
...te runs while debugging from Visual Studio. I am using Visual Studio 2012, and I am using ASP.NET MVC 4 for my projects I want to change the port. Random port or fixed anyone will work just want to change the port.
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How to show Page Loading div until the page has finished loading?
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I've needed this and after some research I came up with this (jQuery needed):
First, right after the <body> tag add this:
<div id="loading">
<img id="loading-image" src="images/ajax-loader.gif" alt="Loading..." />
</d...
Common xlabel/ylabel for matplotlib subplots
...t. You create your subplots, but then add one bit plot, make it invisible, and label its x and y.
– James Owers
May 12 '17 at 9:31
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How to replace a hash key with another key
...akes some time to tell what it is really doing. Your solution is in other hand simple and descriptive.
– Lucas
Nov 13 '14 at 18:55
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BigDecimal - to use new or valueOf
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Those are two separate questions: "What should I use for BigDecimal?" and "What do I do in general?"
For BigDecimal: this is a bit tricky, because they don't do the same thing. BigDecimal.valueOf(double) will use the canonical String representation of the double value passed in to instantiate ...
How to cancel a Task in await?
I'm playing with these Windows 8 WinRT tasks, and I'm trying to cancel a task using the method below, and it works to some point. The CancelNotification method DOES get called, which makes you think the task was cancelled, but in the background the task keeps running, then after it's completed, the ...
Convert base-2 binary number string to int
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You use the built-in int function, and pass it the base of the input number, i.e. 2 for a binary number:
>>> int('11111111', 2)
255
Here is documentation for python2, and for python3.
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What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
...(i.e., form elements, ng-model) in the child scope. Ng-repeat, ng-switch, and ng-include can trip you up if you try to bind to a primitive (e.g., number, string, boolean) in the parent scope from inside the child scope. It doesn't work the way most people expect it should work. The child scope ge...