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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
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169
(For information about the new exception helper in Visual Studio 2017 see the end of this answ...
Why is division in Ruby returning an integer instead of decimal value?
...on. You can make one of the numbers a Float by adding .0:
9.0 / 5 #=> 1.8
9 / 5.0 #=> 1.8
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Speed up the loop operation in R
...on). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the runtime.
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Unique combination of all elements from two (or more) vectors
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141
this maybe what you are after
> expand.grid(a,b)
Var1 Var2
1 ABC 2012-05-01
2 ...
Regex that accepts only numbers (0-9) and NO characters [duplicate]
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Why main does not return 0 here?
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141
That rule was added in the 1999 version of the C standard. In C90, the status returned is und...
How to loop through all but the last item of a list?
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for x in y[:-1]
If y is a generator, then the above will not work.
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Git merge errors
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edited May 23 '17 at 12:02
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answered May 15 '11 at 7:23
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Common MySQL fields and their appropriate data types
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71
Someone's going to post a much better answer than this, but just wanted to make the point that p...