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Graphviz: How to go from .dot to a graph?

I can't seem to figure this out. I have a .dot file, which is valid according to the syntax. How do I use graphviz to convert this into an image? ...
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If strings are immutable in .NET, then why does Substring take O(n) time?

Given that strings are immutable in .NET, I'm wondering why they have been designed such that string.Substring() takes O( substring.Length ) time, instead of O(1) ? ...
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if (key in object) or if(object.hasOwnProperty(key)

Do the following two statements produce the same output? Is there any reason to prefer one way to the other? 7 Answers ...
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Why is std::map implemented as a red-black tree?

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How to remove the arrow from a select element in Firefox

...re in WebKit (Chrome / Safari), but Firefox isn't playing nicely (I'm not even bothering with IE). I'm using the CSS3 appearance property, but for some reason I can't shake the drop-down icon out of Firefox. ...
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Read only file system on Android

I recently rooted my Droid X and everything seems to be working perfectly. I made some changes to build.prop and when I do adb push build.prop /system/ I get the following error: failed to copy 'c:\build.prop' to '/system//build.prop': Read-only file system . ...
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Best way to convert strings to symbols in hash

What's the (fastest/cleanest/straightforward) way to convert all keys in a hash from strings to symbols in Ruby? 31 Answers...
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What's the difference between console.dir and console.log?

In Chrome the console object defines two methods that seem to do the same thing: 9 Answers ...
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Should I use 'has_key()' or 'in' on Python dicts?

I wonder what is better to do: 9 Answers 9 ...
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Javascript reduce() on Object

There is nice Array method reduce() to get one value from the Array. Example: 13 Answers ...