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When should I use the Visitor Design Pattern? [closed]
.... I read the wikipedia article for the pattern and I understand its mechanics but I'm still confused as to when I'd use it.
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How to import a Python class that is in a directory above?
I want to inherit from a class in a file that lies in a directory above the current one.
7 Answers
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Why does LayoutInflater ignore the layout_width and layout_height layout parameters I've specified?
I've had severe trouble getting LayoutInflater to work as expected, and so did other people: How to use layoutinflator to add views at runtime? .
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Passing command line arguments from Maven as properties in pom.xml
Is it possible to pass arguments from command line to properties in pom.xml file ?
for example I run mvn ... argument
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How to create default value for function argument in Clojure
I come with this:
5 Answers
5
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`levels
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For user-code I do wonder why such language manipulations are used so? You ask what magic is this and others have pointed out that you are calling the replacement function that has the name levels<-. For most people this is magic and really the intended use is levels...
Running a cron every 30 seconds
Ok so I have a cron that I need to run every 30 seconds.
19 Answers
19
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API Keys vs HTTP Authentication vs OAuth in a RESTful API
...kens fall into the category of direct Authentication and Authorization mechanisms, as they grant access to exposed resources of the REST APIs. Such direct mechanisms can be used in delegation uses cases.
In order to get access to a resource or a set of resources exposed by REST endpoints, it is nee...
How can I style an Android Switch?
The switch widget introduced in API 14 is styled by default with holo theme.
I want to style it slightly different, changing its colors and shape a bit for branding reasons. How does one go about this? I know it must be possible, as ive seen the difference between default ICS and Samsung's touchwiz ...
Retina displays, high-res background images
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If you are planing to use the same image for retina and non-retina screen then here is the solution. Say that you have a image of 200x200 and have two icons in top row and two icon in bottom row. So, it's four quadrants.
.sprite-of-icons...