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What's the difference between `1L` and `1`?
... (or 2L , 3L , etc) appear in R code. Whats the difference between 1L and 1 ? 1==1L evaluates to TRUE . Why is 1L used in R code?
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Why are floating point numbers inaccurate?
...t numbers are represented a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason it is impossibl...
In which order should floats be added to get the most precise result?
This was a question I was asked at my recent interview and I want to know (I don't actually remember the theory of the numerical analysis, so please help me :)
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Tricks to manage the available memory in an R session
...ive R session? I use the functions below [based on postings by Petr Pikal and David Hinds to the r-help list in 2004] to list (and/or sort) the largest objects and to occassionally rm() some of them. But by far the most effective solution was ... to run under 64-bit Linux with ample memory.
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How to iterate a loop with index and element in Swift
Is there a function that I can use to iterate over an array and have both index and element, like Python's enumerate ?
15 ...
get name of a variable or parameter [duplicate]
...aram1 = MemberInfoGetting.GetMemberName(() => param1);
}
}
C# 6.0 and higher solution
You can use the nameof operator for parameters, variables and properties alike:
string testVariable = "value";
string nameOfTestVariable = nameof(testVariable);
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No == operator found while comparing structs in C++
...han: Why would C++ know how you want to compare your structs for equality? And if you want the simple way, there's always memcmp so long your structs don't contain pointer.
– Xeo
Apr 21 '11 at 6:59
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Useless use of cat?
...at file.txt | grep foo | cut ... | cut .... I gave him a piece of my mind, and only after doing so visited the link he gave me referring to the origins of the award and the practice of doing so. Further searching led me to this question. Somewhat unfortunately despite conscious consideration, none o...
How does collections.defaultdict work?
...re precisely, it's an arbitrary "callable" object, which includes function and type objects). For the first example, default items are created using int(), which will return the integer object 0. For the second example, default items are created using list(), which returns a new empty list object....
Create a tag in a GitHub repository
I have a repository in GitHub and I need to tag it.
I tagged in a shell, but on GitHub , it is not showing up.
7 Answ...