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Adding a legend to PyPlot in Matplotlib in the simplest manner possible

... Add a label= to each of your plot() calls, and then call legend(loc='upper left'). Consider this sample (tested with Python 3.8.0): import numpy as np import matplotlib.pyplot as plt x = np.linspace(0, 20, 1000) y1 = np.sin(x) y2 = np.cos(x) plt.plot(x, y1, "-b", ...
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StringUtils.isBlank() vs String.isEmpty()

...ngUtils.isEmpty(" bob ") = false Warning: In java.lang.String.isBlank() and java.lang.String.isEmpty() work the same except they don't return true for null. java.lang.String.isBlank() (since Java 11) java.lang.String.isEmpty() ...
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Overload with different return type in Java?

... You can't do it in Java, and you can't do it in C++. The rationale is that the return value alone is not sufficient for the compiler to figure out which function to call: public int foo() {...} public float foo() {..} ... foo(); // which one? ...
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Adding additional data to select options using jQuery

... @ithcy All browsers support (and have for 10+ years) "invalid" attributes in the markup, and getting/setting these through the DOM. HTML5 "data" attributes are just custom attributes with a naming scheme and a new standard that declares them to be legal....
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Quick easy way to migrate SQLite3 to MySQL? [closed]

... Everyone seems to starts off with a few greps and perl expressions and you sorta kinda get something that works for your particular dataset but you have no idea if it's imported the data correctly or not. I'm seriously surprised nobody's built a solid library that can co...
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How to extract a git subdirectory and make a submodule out of it?

I started a project some months ago and stored everything within a main directory. In my main directory "Project" there are several subdirectories containing different things: Project/paper contains a document written in LaTeX Project/sourcecode/RailsApp contains my rails app. ...
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How to change the type of a field?

... So simply load the document from the DB, perform the cast (new String(x)) and then save the document again. If you need to do this programmatically and entirely from the shell, you can use the find(...).forEach(function(x) {}) syntax. In response to the second comment below. Change the field ba...
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Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table?

From a script I sent a query like this thousands of times to my local database: 13 Answers ...
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How to use a variable for the database name in T-SQL?

I use the database name in several places in my script, and I want to be able to quickly change it, so I'm looking for something like this: ...
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Render basic HTML view?

...ade include plain.html in views/plain.html <!DOCTYPE html> ... and app.js can still just render jade: res.render(index) share | improve this answer | follow ...