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Python matplotlib multiple bars

How to plot multiple bars in matplotlib, when I tried to call the bar function multiple times, they overlap and as seen the below figure the highest value red can be seen only. How can I plot the multiple bars with dates on the x-axes? ...
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Representing and solving a maze given an image

...lection breaks are not false edges introduced by wrong threshold. In fact, all interior points of this maze are accessible from the start. Add artificial borders on the maze to make sure virtual traveler will not walk around it :) Implement breadth-first search (BFS) in your favorite language and ru...
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List all files in one directory PHP [duplicate]

What would be the best way to list all the files in one directory with PHP? Is there a $_SERVER function to do this? I would like to list all the files in the usernames/ directory and loop over that result with a link, so that I can just click the hyperlink of the filename to get there. Thanks! ...
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Is there a better way to express nested namespaces in C++ within the header

... To avoid really deep indenting, I usually do it this way: namespace A { namespace B { namespace C { class X { // ... }; }}} share ...
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Is the C# static constructor thread safe?

... { mutex.WaitOne(); return instance; } // Each call to Acquire() requires a call to Release() public static void Release() { mutex.ReleaseMutex(); } } share | ...
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What is the best way to compute trending topics or tags?

... This problem calls for a z-score or standard score, which will take into account the historical average, as other people have mention, but also the standard deviation of this historical data, making it more robust than just using the avera...
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Why does the C preprocessor interpret the word “linux” as the constant “1”?

Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ? 5 Answers ...
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Convert nested Python dict to object?

...; s.a 1 >>> s.b {'c': 2} >>> s.c Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'MyStruct' object has no attribute 'c' >>> s.d ['hi'] The alternative (original answer contents) is: class Struct: def __init__(self...
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When to use self over $this?

... $x = new Y(); $x->bar(); ?> The idea is that $this->foo() calls the foo() member function of whatever is the exact type of the current object. If the object is of type X, it thus calls X::foo(). If the object is of type Y, it calls Y::foo(). But with self::foo(), X::foo() is always ...
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Best algorithm for detecting cycles in a directed graph [closed]

What is the most efficient algorithm for detecting all cycles within a directed graph? 14 Answers ...