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remove None value from a list without removing the 0 value
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10 Answers
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Django Server Error: port is already in use
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A more simple solution just type sudo fuser -k 8000/tcp.
This should kill all the processes associated with port 8000.
EDIT:
For osx users you can use sudo lsof -t -i tcp:8000 | xargs kill -9
sha...
How do you push a Git tag to a branch using a refspec?
I want to force push, for example, my tag 1.0.0 to my remote master branch.
4 Answers
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Why is a round-trip conversion via a string not safe for a double?
...mber->precision = precision;
if (((FPDOUBLE*)&value)->exp == 0x7FF) {
number->scale = (((FPDOUBLE*)&value)->mantLo || ((FPDOUBLE*)&value)->mantHi) ? SCALE_NAN: SCALE_INF;
number->sign = ((FPDOUBLE*)&value)->sign;
number->digits[0] =...
Replace all 0 values to NA
I have a dataframe with some numeric columns. Some row has a 0 value which should be considered as null in statistical analysis. What is the fastest way to replace all the 0 value to NULL in R?
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Apply a function to every row of a matrix or a data frame
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[3,] 5 6
R> apply(M, 1, function(x) 2*x[1]+x[2])
[1] 4 10 16
R>
This takes a matrix and applies a (silly) function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to apply().
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Javascript calculate the day of the year (1 - 366)
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var now = new Date();
var start = new Date(now.getFullYear(), 0, 0);
var diff = now - start;
var oneDay = 1000 * 60 * 60 * 24;
var day = Math.floor(diff / oneDay);
console.log('Day of year: ' + day);
Edit: The code above will fail when now is a date in between march 26th and ...
Modify SVG fill color when being served as Background-Image
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edited Dec 21 '18 at 0:15
David Neto
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answered ...
How to find the kth smallest element in the union of two sorted arrays?
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50
You've got it, just keep going! And be careful with the indexes...
To simplify a bit I'll assum...
How do I print a double value without scientific notation using Java?
...8;
System.out.printf("dexp: %f\n", dexp);
This will print dexp: 12345678.000000. If you don't want the fractional part, use
System.out.printf("dexp: %.0f\n", dexp);
This uses the format specifier language explained in the documentation.
The default toString() format used in your original code ...