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Overlaying histograms with ggplot2 in R

I am new to R and am trying to plot 3 histograms onto the same graph. Everything worked fine, but my problem is that you don't see where 2 histograms overlap - they look rather cut off. ...
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How to make inline functions in C#

...ored { Console.WriteLine("Hello world!"); } Lambdas are new in C# 3.0 and come in two flavours. Expression lambdas: Func<int, int, int> add = (int x, int y) => x + y; // or... Func<int, int, int> add = (x, y) => x + y; // types are inferred by the compiler Statement lambda...
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what does the __file__ variable mean/do?

...But there is a reason for these statements that determine path at runtime, and I would really like to understand the os.path module so that I can start using it. ...
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Can I use multiple “with”?

... patindex('%' + A.[Col] + '%', X.[SQL]) > 0 ) AS INC ) And yes, you can reference common table expression inside common table expression definition. Even recursively. Which leads to some very neat tricks. ...
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How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g

...ring for string, numeric ordering for integers). When you order a numeric and a non-numeric type, the numeric type comes first. >>> 5 < 'foo' True >>> 5 < (1, 2) True >>> 5 < {} True >>> 5 < [1, 2] True When you order two incompatible types where n...
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Difference between new and override

... The override modifier may be used on virtual methods and must be used on abstract methods. This indicates for the compiler to use the last defined implementation of a method. Even if the method is called on a reference to the base class it will use the implementatio...
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Why can I initialize a List like an array in C#?

...method named Add(...) What happens is the default constructor is called, and then Add(...) is called for each member of the initializer. Thus, these two blocks are roughly identical: List<int> a = new List<int> { 1, 2, 3 }; And List<int> temp = new List<int>(); temp.Ad...
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How do I find if a string starts with another string in Ruby?

...ingly, Rails defines the grammaticaly correct starts_with?, which in 1.8.7 and above is just aliased to start_with?. – Mark Thomas Nov 13 '10 at 14:57 ...
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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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How to get execution time in rails console?

I want compare time of execution Post.all and SELECT * FROM posts (or some other statements) How can i get execution time of Post.all ? ...