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How do I check if a string is a number (float)?
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Is it possible to force Excel recognize UTF-8 CSV files automatically?
I'm developing a part of an application that's responsible for exporting some data into CSV files. The application always uses UTF-8 because of its multilingual nature at all levels. But opening such CSV files (containing e.g. diacritics, cyrillic letters, Greek letters) in Excel does not achieve th...
Is it worth using Python's re.compile?
Is there any benefit in using compile for regular expressions in Python?
26 Answers
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Good examples of Not a Functor/Functor/Applicative/Monad?
While explaining to someone what a type class X is I struggle to find good examples of data structures which are exactly X.
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Regular Expression to reformat a US phone number in Javascript
...ences for validating) a phone number for display in Javascript. Here's an example of some of the data:
12 Answers
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Converting from longitude\latitude to Cartesian coordinates
... it all depends on the accuracy you require for what you are doing. For example, the result calculated from "Manhattan Distance Formula" versus the result from the "Distance Formula" can be better for certain situations as it is computationally less expensive. Think "which point is closest?" scen...
Why doesn't C# support the return of references?
...orts both these features. You could then do things like
static ref int Max(ref int x, ref int y)
{
if (x > y)
return ref x;
else
return ref y;
}
and then call it with
int a = 123;
int b = 456;
ref int c = ref Max(ref a, ref b);
c += 100;
Console.WriteLine(b); // 556!
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Scala how can I count the number of occurrences in a list
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what if I wanted to define an accumulator map in that expression instead of creating a new map?
– Tobias Kolb
Jun 12 '19 at 13:33
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Cleaning `Inf` values from an R dataframe
... do.call to recreate a data.frame.
do.call(data.frame,lapply(DT, function(x) replace(x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(...