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Should I call Close() or Dispose() for stream objects?

Classes such as Stream , StreamReader , StreamWriter etc implements IDisposable interface. That means, we can call Dispose() method on objects of these classes. They've also defined a public method called Close() . Now that confuses me, as to what should I call once I'm done with objects?...
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What's the difference between a word and byte?

I've done some research. A byte is 8 bits and a word is the smallest unit that can be addressed on memory. The exact length of a word varies. What I don't understand is what's the point of having a byte? Why not say 8 bits? ...
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Combined area of overlapping circles

I recently came across a problem where I had four circles (midpoints and radius) and had to calculate the area of the union of these circles. ...
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Best way to do multiple constructors in PHP

You can't put two __construct functions with unique argument signatures in a PHP class. I'd like to do this: 21 Answers ...
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“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si

I'm under osx 10.8.4 and have installed gdb 7.5.1 with homebrew (motivation get a new gdb with new features such as --with-python etc... ) ...
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A cron job for rails: best practices?

What's the best way to run scheduled tasks in a Rails environment? Script/runner? Rake? I would like to run the task every few minutes. ...
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Cannot install packages using node package manager in Ubuntu

NodeJS interpreter name( node ) on Ubuntu has been renamed to nodejs because of a name conflict with another package. Here's what the readme. Debian says: ...
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How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error: ...
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What are the differences between BDD frameworks for Java? [closed]

What are the pros and cons of each Behavior Driven Development (BDD) framework for Java? 8 Answers ...
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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]

I want to create a default value for an attribute by defining it in ActiveRecord. By default everytime the record is created, I want to have a default value for attribute :status . I tried to do this: ...