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How to convert list of tuples to multiple lists?
...
from timeit import timeit
setup_string='''\
N = 2000000
xs = list(range(1, N))
ys = list(range(N+1, N*2))
zs = list(zip(xs, ys))
from __main__ import t1, t2, t3
'''
print(f'zip:\t\t{timeit('t1(zs)', setup=setup_string, number=1000)}')
print(f'append:\t\t{timeit('t2(zs)', setup=setup...
How to map atan2() to degrees 0-360
...ame value.
Negative: -180 to -1
Using mod here will return values in the range of 180 and 359 degrees.
Special cases: 0 and 360
Using mod means that 0 is returned, making this a safe 0-359 degrees solution.
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Understanding “randomness”
...o No, it doesn't... ? If a random variable is uniformly distributed in the range (0,1), and you sample the variable n times, and take the sum, it will just be uniformly distributed in the range (0,n).
– user359996
Oct 18 '10 at 3:56
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Click through div to underlying elements
... what element the pointer is on
fire the click on the element there.
var range-selector= $("")
.css("position", "absolute").addClass("range-selector")
.appendTo("")
.click(function(e) {
_range-selector.hide();
$(document.elementFromPoint(e.clientX,e.clientY)).trigger("...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
... the source from ExcelPackage, but today it's a total rewrite.
It supports ranges, cell styling, charts, shapes, pictures, named ranges, AutoFilter and a lot of other stuff.
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How to find out element position in slice?
...function works, although it would be a little better if you wrote it using range.
If you happen to have a byte slice, there is bytes.IndexByte.
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MVC (Laravel) where to add logic
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// post as created by the current user.
$post->user_id = auth()->id();
}
$post->title = $this->title;
$post->description = $this->description;
// Perform other tasks, maybe fire an event, dispatch a job.
if ($post-...
What columns generally make good indexes?
...ostly unique. If all you do is get events that happened in a certain date range, you definitely want one. In most cases, an index on gender is pointless -- but if all you do is get stats about all males, and separately, about all females, it might be worth your while to create one. Figure out wha...
1052: Column 'id' in field list is ambiguous
...
It's not a 'fully qualified name', it is a range variable. When you omit an explicit range variable, SQL generates one that is the same as the table name. To better see what I mean, change your FROM clause ...FROM tbl_names tbl_names, tbl_section tbl_section WHERE... ...
Difference in months between two dates
... use the latter solution then your unit tests should state the widest date range which your application is designed to work with and validate the results of the calculation accordingly.
Update (with thanks to Gary)
If using the 'average months' method, a slightly more accurate number to use for ...