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What is a Lambda?

Could someone provide a good description of what a Lambda is? We have a tag for them and they're on the secrets of C# question, but I have yet to find a good definition and explanation of what they are in the first place. ...
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Remove 'a' from legend when using aesthetics and geom_text

How can I can remove the letter 'a' from the legend generated by this code? If I remove the geom_text , then the 'a' letter will not show in the legend. I want to keep geom_text , though. ...
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How to track down log4net problems

... out is how to tell what's going on on the inside. For example, I've got a console appender and a database appender in my project. I made a few changes to the database and the code, and now the database appender doesn't work anymore. I'll figure out why eventually, but it would help a lot if I could...
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Simulate airplane mode in iPhone Simulator

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Overwrite or override

It might seem to be a stupid question but I'm just so curious and want to use the correct term when talking about the issue. Couldn't find a similar question here so I decided to create a new one. ...
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Deprecated warning for Rails 4 has_many with order

I have this model in my rails app which throws warning when I try to create records in console. 5 Answers ...
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Webstorm: “Cannot Resolve Directory”

...m has a sweet feature in it's HTML parser that will attempt to resolve directories in strings that are supposed to reference a file in your project. For example: ...
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Fetch first element which matches criteria

How to get first element that matches a criteria in a stream? I've tried this but doesn't work 3 Answers ...
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How to sync with a remote Git repository?

I forked a project on github, made some changes, so far so good. 5 Answers 5 ...
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Can I tell the Chrome script debugger to ignore jquery.js?

Is there a way to tell the Chrome debugger (or maybe Firebug?) to not break within certain files? To assume they're not broken, essentially? This seems like something they might build in. ...