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What is SaaS, PaaS and IaaS? With examples

... IaaS, PaaS and SaaS are cloud computing service models. IaaS (Infrastructure as a Service), as the name suggests, provides you the computing infrastructure, physical or (quite often) virtual machines and other resources like virtual-...
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Locate Git installation folder on Mac OS X

...git version in /usr/bin. To ensure you can easily upgrade from the website and use the latest git version, edit either your profile information to place /usr/local/git/bin before /usr/bin in the $PATH or edit /etc/paths and insert /usr/local/git/bin as the first entry (see this answer). ...
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Xcode 4 - slow performance

...ake sure Xcode isn't open. Now find your project file. Right-click on it, and select Show Package Contents. Next, delete project.xcworkspace. Open Xcode and enjoy faster performance! Thanks to: http://meachware.blogspot.com/2011/06/speed-up-xcode-4.html Edit: I've gotten several commen...
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List all the modules that are part of a python package?

...importer like this: m = importer.find_module(modname).load_module(modname) and then m is the module, so for example: m.myfunc() – chrisleague Jun 7 '14 at 0:55 ...
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Android emulator shows nothing except black screen and adb devices shows “device offline”

I am just trying to start development in Android. So, the problem is that when I try to launch an emulator by issuing the command emulator @A2 , an emulator comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the android home screen or t...
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setBackground vs setBackgroundDrawable (Android)

... a view. There are two methods for this (as far as I see): setBackground and setBackgroundDrawable . 12 Answers ...
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In-place edits with sed on OS X

I'd like edit a file with sed on OS X. I'm using the following command: 6 Answers 6 ...
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Generating a unique machine id

... Parse the SMBIOS yourself and hash it to an arbitrary length. See the PDF specification for all SMBIOS structures available. To query the SMBIOS info from Windows you could use EnumSystemFirmwareEntries, EnumSystemFirmwareTables and GetSystemFirmware...
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Can't update Macports (with Mac OS X Mavericks)

... Install the "Command Line Tools" first: sudo xcode-select --install (Explicitly agreeing to the license is sometimes necessary via "sudo xcodebuild -license") Then upgrade the ports: sudo port -v selfupdate ...
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How to fix “Attempted relative import in non-package” even with __init__.py

...s could use quite a bit more detail, given the popularity of this question and answer. Noting stuff like from what directory to execute the above shell command, the fact that you need __init__.pys all the way down, and the __package__-modifying trickery (described below by BrenBarn) needed to allow ...