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Possible to make labels appear when hovering over a point in matplotlib?

I am using matplotlib to make scatter plots. Each point on the scatter plot is associated with a named object. I would like to be able to see the name of an object when I hover my cursor over the point on the scatter plot associated with that object. In particular, it would be nice to be able to qui...
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LaTeX package for syntax highlighting of code in various languages

I am looking for a LaTeX package that does syntax highlighting on code. For example, right now I use the verbatim block to write code: ...
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Using ping in c#

When I Ping a remote system with windows it says there is no reply, but when I ping with c# it says success. Windows is correct, the device is not connected. Why is my code able to successfully ping when Windows is not? ...
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How to check if a file exists in Go?

Go's standard library does not have a function solely intended to check if a file exists or not (like Python's os.path.exists ). What is the idiomatic way to do it? ...
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Regular expression to match DNS hostname or IP Address?

Does anyone have a regular expression handy that will match any legal DNS hostname or IP address? 21 Answers ...
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?

I have several PHP pages echoing out various things into HTML pages with the following code. 6 Answers ...
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Equals(=) vs. LIKE

When using SQL, are there any benefits of using = in a WHERE clause instead of LIKE ? 15 Answers ...
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Take a char input from the Scanner

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Command-line Unix ASCII-based charting / plotting tool

Is there a good command-line UNIX charting / graphing / plotting tool out there? I'm looking for something that will plot xy points on an ASCII graph. ...
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Node package ( Grunt ) installed but not available

I'm trying to build a github jquery-ui library using grunt , but after running npm install I still can't run the command according to the readme file . It just gives No command 'grunt' found : ...