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vertical & horizontal lines in matplotlib

I do not quite understand why I am unable to create horizontal and vertical lines at specified limits. I would like to bound the data by this box. However, the sides do not seem to comply with my instructions. Why is this? ...
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Difference between save and saveAndFlush in Spring data jpa

I am trying to learn spring data JPA by testing some CRUD operation via JpaRepository . 2 Answers ...
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Why is HTML5 input type datetime removed from browsers already supporting it?

I was wondering why all browsers, like Chrome versions higher than 26, which had support in the past for the input datetime removed it? ...
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Append an element with fade in effect [jQuery]

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Mixing a PHP variable with a string literal

Say I have a variable $test and it's defined as: $test = 'cheese' 4 Answers 4 ...
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What does the “|” (single pipe) do in JavaScript?

Why does 0.5 | 0 return zero, but any integer (including negative) returns the input integer? What does the single pipe ("|") do? ...
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Python argparse mutual exclusive group

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NULL vs nil in Objective-C

In observeValueForKeyPath:ofObject:change:context: - why do the docs use NULL instead of nil when not specifying a context pointer? ...
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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?

Why is it that scanf() needs the l in " %lf " when reading a double , when printf() can use " %f " regardless of whether its argument is a double or a float ? ...
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Visual Studio - Resx File default 'internal' to 'public'

Every time I edit a resource file in VS, it regenerates the corresponding code and sets the class access modifier to internal. It's a pain to Ctrl-F -> ReplaceAll every time I edit the resx. Is there a property/setting so that I can default this to public? ...