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Calculate business days
...tween the two dates. We compute the no. of seconds and divide it to 60*60*24
//We add one to inlude both dates in the interval.
$days = ($endDate - $startDate) / 86400 + 1;
$no_full_weeks = floor($days / 7);
$no_remaining_days = fmod($days, 7);
//It will return 1 if it's Monday...
How to filter a dictionary according to an arbitrary condition function?
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434
Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.it...
How to squash commits in git after they have been pushed?
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Squash commits locally with
git rebase -i origin/master~4 master
and then force push with
git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with pus...
How to equalize the scales of x-axis and y-axis in Python matplotlib?
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4 Answers
4
Active
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Method has the same erasure as another method in type
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ericksonerickson
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How to assert output with nosetest/unittest in python?
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Rob KennedyRob Kennedy
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How to format numbers by prepending 0 to single-digit numbers?
...he line that determines the sign was found here).
var myNumber = -7.2345;
var sign = myNumber?myNumber<0?-1:1:0;
myNumber = myNumber * sign + ''; // poor man's absolute value
var dec = myNumber.match(/\.\d+$/);
var int = myNumber.match(/^[^\.]+/);
var formattedNumber = (sign < 0 ? ...
How can you encode a string to Base64 in JavaScript?
I have a PHP script that can encode a PNG image to a Base64 string.
26 Answers
26
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How do you delete a column by name in data.table?
... copy of it), Methods 1, 2a, and 2b are really the best options.
# Method 4:
df3[, .SD, .SDcols = !patterns("^foo$")]
Lastly there are approaches using with=FALSE, though data.table is gradually moving away from using this argument so it's now discouraged where you can avoid it; showing here so...
An algorithm for inflating/deflating (offsetting, buffering) polygons
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141
I thought I might briefly mention my own polygon clipping and offsetting library - Clipper.
Wh...