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Read text file into string array (and write)
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How can I implement a tree in Python?
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I came across this answer via Google. This library is really nice. I especially love the ability to use the mixin class to make an tree of any object!
– Rÿck Nöthing
Mar 8 '19 at 1:21
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Best way to test for a variable's existence in PHP; isset() is clearly broken
...ariables to the global scope whose names were determined by aspects of the HTTP request (GET and POST parameters, and cookies). This can lead to buggy and insecure code, which is why it has been disabled by default since PHP 4.2, released Aug 2000 and removed completely in PHP 5.4, released Mar 2012...
Why can I initialize a List like an array in C#?
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Google Maps v3 - limit viewable area and zoom level
...Fiddle Demo
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps JavaScript API v3 Example: Limit Panning and Zoom</title>
<script type="text/javascript"
src="http://maps...
How to return result of a SELECT inside a function in PostgreSQL?
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Hi please check the below link
https://www.postgresql.org/docs/current/xfunc-sql.html
EX:
CREATE FUNCTION sum_n_product_with_tab (x int)
RETURNS TABLE(sum int, product int) AS $$
SELECT $1 + tab.y, $1 * tab.y FROM tab;
$$ LANGUAGE SQL;
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How To Check If A Key in **kwargs Exists?
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Weighted random numbers
...a weighted random numbers. I'm currently just banging my head against the wall and cannot figure this out.
7 Answers
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$PHP_AUTOCONF errors on mac os x 10.7.3 when trying to install pecl extensions
I am trying to setup my machine with pecl_http and memcache and in both cases, I get similar errors. This is on MAC OS X 10.7.3 (lion) and I also have XCODE installed on it. I also installed Zend Server community edition before running these commands and have CFLAGS='-arch i386 -arch x86_64' environ...
Filter rows which contain a certain string
...verse)
# The data. Data expo 09. ASA Statistics Computing and Graphics
# http://stat-computing.org/dataexpo/2009/the-data.html
df <- read_csv("Downloads/2008.csv")
print(dim(df))
# [1] 7009728 29
benchmark(
"str_detect" = {df %>% filter(str_detect(Dest, 'MCO|BWI'))},
"grepl" = {df ...