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What does -> mean in Python function definitions?
...ies, so you can do this:
>>> '{:,} {}'.format(kinetic_energy(20,3000),
kinetic_energy.__annotations__['return'])
'90,000,000.0 Joules'
You can also have a python data structure rather than just a string:
>>> rd={'type':float,'units':'Joules','docstring':'Given mass and ve...
Deleting lines from one file which are in another file
...
This worked for me, as my files were sorted and had 250,000+ lines in one of them, only 28,000 in the other. Thanks!
– Winter
May 26 '14 at 22:22
1
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How to store a dataframe using Pandas
...HDF5 storage format
In their experiment, they serialize a DataFrame of 1,000,000 rows with the two columns tested separately: one with text data, the other with numbers. Their disclaimer says:
You should not trust that what follows generalizes to your data. You should look at your own data and...
Try-catch speeding up my code?
...whole loop:
var stopwatch = Stopwatch.StartNew();
for (int i = 1; i < 100000000; i++)
{
Fibo(100);
}
stopwatch.Stop();
Console.WriteLine("Elapsed time: {0}", stopwatch.Elapsed);
That way you're not at the mercy of tiny timings, floating point arithmetic and accumulated error.
Having made ...
How to make execution pause, sleep, wait for X seconds in R?
...le
}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
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How to test if a string is basically an integer in quotes using Ruby
...es when parsing integers (negative numbers, hex, octal, underscores e.g. 1_000_000) it would be a very big Regex and easy to get wrong. Integer() is canonical because with Integer ()you know for sure that anything that Ruby considers an integer literal will be accepted, and everything else will be ...
What data type to use for money in Java? [closed]
...
Many banks handle far larger sums of money that $20,000,000 every day. This does not even take account of currencies like yen with large exchange rates to the dollar. Integer types may be best to avoid rounding problems although they get messy with interest and exchange rate...
Turning a Comma Separated string into individual rows
...k if change the data type of the column Data from varchar(max) to varchar(4000), e.g. create table Testdata(SomeID int, OtherID int, Data varchar(4000))?
– ca9163d9
Feb 21 '12 at 23:58
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Append value to empty vector in R?
...alues)) vector[i] <- values[i] )
# user system elapsed
# 0.340 0.000 0.343
vector <- character(length(values))
# fast(er)
system.time( for (i in 1:length(values)) vector[i] <- values[i] )
# user system elapsed
# 0.024 0.000 0.023
...
Why is ArrayDeque better than LinkedList
... Measure time in terms of milliseconds.
Test Result:
Below 10,000 elements, both LinkedList and ArrayDeque tests averaged at a sub 1 ms level.
As the sets of data get larger, the differences between the ArrayDeque and LinkedList average test time gets larger.
At the test size ...