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How to check the version before installing a package using apt-get?

...ow the version details. It also shows which version is currently installed and which versions are available to install. For example, apt-cache policy hylafax+ share | improve this answer | ...
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Why can't an anonymous method be assigned to var?

...to be the default instead of Predicate or Action or any other possibility? And, for lambdas, why is it obvious that the intention is to choose the delegate form, rather than the expression tree form? But we could say that Func is special, and that the inferred type of a lambda or anonymous method i...
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Python recursive folder read

I have a C++/Obj-C background and I am just discovering Python (been writing it for about an hour). I am writing a script to recursively read the contents of text files in a folder structure. ...
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What is the difference between Java RMI and RPC?

What is the actual difference between Java RMI and RPC? 8 Answers 8 ...
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Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?

...code on, using the Pointer Lock API. I forked this pointer-lock-demo repo and modified it to add a random movement element. Here is the link to my GitHub page: https://aristocrates.github.io/pointer-lock-demo And here is the link to my repo: https://github.com/aristocrates/pointer-lock-demo The j...
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HTTP status code for a partial successful request

...onse> </D:multistatus> But again, this is an HTTP extension, and you need to have control of the client as well. share | improve this answer | follow ...
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Relationship between hashCode and equals method in Java [duplicate]

...ctions where unicity of elements is calculated according to both .equals() and .hashCode(), for instance keys in a HashMap. As its name implies, it relies on hash tables, and hash buckets are a function of the object's .hashCode(). If you have two objects which are .equals(), but have different ha...
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How to test chrome extensions?

...I'm writing an extension that interacts with a website as a content script and saves data using localstorage. Are there any tools, frameworks, etc. that I can use to test this behavior? I realize there are some generic tools for testing javascript, but are those sufficiently power to test an extensi...
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Why doesn't Objective-C support private methods?

... The answer is... well... simple. Simplicity and consistency, in fact. Objective-C is purely dynamic at the moment of method dispatch. In particular, every method dispatch goes through the exact same dynamic method resolution point as every other method dispatch. At...
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How do I pass variables and data from PHP to JavaScript?

I have a variable in PHP, and I need its value in my JavaScript code. How can I get my variable from PHP to JavaScript? 19 ...