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How to make rounded percentages add up to 100%
...sion using underscorejs:
function foo(l, target) {
var off = target - _.reduce(l, function(acc, x) { return acc + Math.round(x) }, 0);
return _.chain(l).
sortBy(function(x) { return Math.round(x) - x }).
map(function(x, i) { return Math.round(x) + (off > i) - (i &...
What is the most efficient way to loop through dataframes with pandas? [duplicate]
...if close is a 1-d array, and you want the day-over-day percent change,
pct_change = close[1:]/close[:-1]
This computes the entire array of percent changes as one statement, instead of
pct_change = []
for row in close:
pct_change.append(...)
So try to avoid the Python loop for i, row in en...
Why use strict and warnings?
...ch as @ARGV, %ENV, and all the global punctuation variables such as $. or $_.
Declared with our (for a global) or my (for a lexical).
Imported from another package. (The use vars pragma fakes up an import, but use our instead.)
Fully qualified using its package name and the double-colon package sepa...
jQuery or CSS selector to select all IDs that start with some string [duplicate]
How can I select all elements whose id starts with "player_"?
4 Answers
4
...
Scala @ operator
...n itself? That would be accomplished with this:
o match {
case x @ Some(_) => println(x)
case None =>
}
Note that @ can be used at any level, not just at the top level of the matching.
share
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Difference between “git checkout ” and “git checkout -- ”
...ould normally discard uncommitted changes
# to the _file_ "README"
git checkout master # would normally switch the working copy to
# the _branch_ "master"
git checkout -- master # discard uncommitted changes to the _file_ "master"
and option/f...
Delete files older than 15 days using PowerShell
...n the $limit.
Get-ChildItem -Path $path -Recurse -Force | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $limit } | Remove-Item -Force
# Delete any empty directories left behind after deleting the old files.
Get-ChildItem -Path $path -Recurse -Force | Where-Object { $_.PSIsContainer -and...
Create a dictionary on a list with grouping
...vert it to a dictionary, as follows:
Dim qry = (From acs In ActualSales _
Group By acs.ProductID Into Group _
Select ProductID, Months = Group.ToDictionary(Function(c) c.Period) _
).ToDictionary(Function(c) c.ProductID)
The resulting query can be used as fo...
Chained method calls indentation style in Python [duplicate]
...method names get longer and as methods start taking arguments:
return some_collection.get_objects(locator=l5) \
.get_distinct(case_insensitive=True) \
.filter(predicate=query(q5)) \
.values()
PEP 8 is intend to be interpreted with ...
Reference - What does this error mean in PHP?
..., which resulted in headers to be already sent to the client.
This is an E_WARNING and it will not stop the script.
A typical example would be a template file like this:
<html>
<?php session_start(); ?>
<head><title>My Page</title>
</html>
...
The ses...