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Order discrete x scale by frequency/value

I am making a dodged bar chart using ggplot with discrete x scale, the x axis are now arranged in alphabetical order, but I need to rearrange it so that it is ordered by the value of the y-axis (i.e., the tallest bar will be positioned on the left). ...
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Compare if two variables reference the same object in python

How to check whether two variables reference the same object? 6 Answers 6 ...
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Group by with multiple columns using lambda

How can I group by with multiple columns using lambda? 5 Answers 5 ...
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How to check if variable's type matches Type stored in a variable

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dealloc in Swift

I would like to perform some cleanup at the end of a view controller's life, namely to remove an NSNotificationCenter notification. Implementing dealloc results in a Swift compiler error: ...
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Maximum on http header values?

Is there an accepted maximum allowed size for HTTP headers? If so, what is it? If not, is this something that's server specific or is the accepted standard to allow headers of any size? ...
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Hexadecimal To Decimal in Shell Script

Can someone help me to convert a hexadecimal number to decimal number in a shell script? 6 Answers ...
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What are some uses of decltype(auto)?

In c++14 the decltype(auto) idiom is introduced. 2 Answers 2 ...
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Does PowerShell support constants?

I would like to declare some integer constants in PowerShell. 6 Answers 6 ...
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Filter element based on .data() key/value

Say I have 4 div elements with class .navlink , which, when clicked, use .data() to set a key called 'selected' , to a value of true : ...