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How to use Greek symbols in ggplot2?

... thanks. But how's that exactly? xlab(expression(Delta)price) gives an error – jf328 Mar 30 '17 at 10:03 ...
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Handling a colon in an element ID in a CSS selector [duplicate]

...lash. – Craig Hyatt Oct 2 '08 at 20:05 1 It’s probably best to escape the underscore as well, t...
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Will the Garbage Collector call IDisposable.Dispose for me?

...lly "override" the Object.Finalize method in C#, the compiler generates an error: Do not override object.Finalize. Instead, provide a destructor. ; i.e. you must implement a destructor that effectively acts as the Finalizer. [just added here for completeness as this is the accepted answer and most l...
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E11000 duplicate key error index in mongodb mongoose

... The error message is saying that there's already a record with null as the email. In other words, you already have a user without an email address. The relevant documentation for this: If a document does not have a value for the...
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Nginx reverse proxy causing 504 Gateway Timeout

...you mean just to add those lines? without server{} or something else? This error comes out right after 5 minutes. I reload, reboot, and it never makes it through beyond those 5 minutes or 300 seconds. Are there more ideas to fix it? – Pathros May 1 at 22:53 ...
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Django: Get list of model fields?

... What about ForeignKey? I have errors like this django.db.models.fields.related.RelatedObjectDoesNotExist: CustomModel has no custom_attribute. – SAKrisT Oct 17 '14 at 9:35 ...
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Python: How to create a unique file name?

... @ToloPalmer: It's more likely that your computer's CPU has a processing error that causes it to load the wrong file than it is a generated UUID collides with any existing value. UUID produces a unique name in a model of computing that understands not all computation is pure mathematics. ...
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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req

...I built-in Flask . However, when I make the request, I get the following error: 9 Answers ...
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Making Python loggers output all messages to stdout in addition to log file

...xample, I'd like all calls to logger.warning , logger.critical , logger.error to go to their intended places but in addition always be copied to stdout . This is to avoid duplicating messages like: ...
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How to remove the first and the last character of a string

... answered Nov 25 '13 at 15:05 leafleaf 13.5k66 gold badges4848 silver badges7777 bronze badges ...