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Difference between signed / unsigned char [duplicate]
... int and unsigned int is that a bit is used to signify if the number if positive or negative, but how does this apply to a char ? How can a character be positive or negative?
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When to use volatile with multi threading?
...it into cache for this thread's stores, not doing any explicit flushing. (https://preshing.com/20120913/acquire-and-release-semantics/ and https://preshing.com/20120710/memory-barriers-are-like-source-control-operations/). (And an acquire-load means ordering access to cache in the other core).
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C# 3.0 auto-properties — useful or not? [closed]
Note: This was posted when I was starting out C#. With 2014 knowledge, I can truly say that auto-properties are among the best things that ever happened to the C# language.
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How to automatically crop and center an image
Given any arbitrary image, I want to crop a square from the center of the image and display it within a given square.
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How to create dictionary and add key–value pairs dynamically?
From post:
15 Answers
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How to use regex with find command?
I have some images named with generated uuid1 string. For example 81397018-b84a-11e0-9d2a-001b77dc0bed.jpg. I want to find out all these images using "find" command:
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PG undefinedtable error relation users does not exist
I saw this question up before, but only for rspec. I haven't created test yet because it's too advanced for me but one day soon i will! :P
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How to create a backup of a single table in a postgres database?
Is there a way to create a backup of a single table within a database using postgres? And how? Does this also work with the pg_dump command?
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Reading ePub format
I am trying to develop an iPhone application to read ePub files. Is there any framework available to develop this? I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser, but that fails.
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How to install the JDK on Ubuntu Linux
I am trying to install the Java Development Kit (JDK) on Ubuntu Linux distribution, but I am unable to install it.
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