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How would you implement an LRU cache in Java?
Please don't say EHCache or OSCache, etc. Assume for purposes of this question that I want to implement my own using just the SDK (learning by doing). Given that the cache will be used in a multithreaded environment, which datastructures would you use? I've already implemented one using LinkedHashM...
How to determine if one array contains all elements of another array
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How do I negate a condition in PowerShell?
How do I negate a conditional test in PowerShell?
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Select rows of a matrix that meet a condition
In R with a matrix:
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Using str_replace so that it only acts on the first match?
I want a version of str_replace() that only replaces the first occurrence of $search in the $subject . Is there an easy solution to this, or do I need a hacky solution?
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How to capture UIView to UIImage without loss of quality on retina display
My code works fine for normal devices but creates blurry images on retina devices.
17 Answers
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MySql Table Insert if not exist otherwise update
It works if the datenum exists, but I want to insert this data as a new row if the datenum does not exist.
3 Answers
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How to execute a java .class from the command line
I have a compiled java class:
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How to submit a form using PhantomJS
I'm trying to use phantomJS (what an awesome tool btw!) to submit a form for a page that I have login credentials for, and then output the content of the destination page to stdout. I'm able to access the form and set its values successfully using phantom, but I'm not quite sure what the right synta...
Is returning by rvalue reference more efficient?
for example:
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