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What is for Python what 'explode' is for PHP?
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Calculating Pearson correlation and significance in Python
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Great answer - by far the most informative. Also works with a two-row pandas.DataFrame: lineregress(two_row_df)
– dmeu
Mar 9 '16 at 10:09
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A numeric string as array key in PHP
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Yes, it is possible by array-casting an stdClass object:
$data = new stdClass;
$data->{"12"} = 37;
$data = (array) $data;
var_dump( $data );
That gives you (up to PHP version 7.1):
array(1) {
["12"]=>
int(37)
}
(Update: My origi...
Convert array of strings to List
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Dynamically select data frame columns using $ and a character value
...2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. Seccond argument in do.call is a list of arguments
# to pass to the first argument, in this case 'order'.
# Since a data.frame is r...
Xcode Find and replace in all project files
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AngularJs event to call after content is loaded
...dded but before angular has finished processing the dom. You can test this by adding a id or class as angular variable and try to find it in $viewContentLoaded with jQuery. You will not find it.
– Thomas Kekeisen
Jun 11 '15 at 6:51
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Running a cron every 30 seconds
...ibility, though it's a bit of a kludge(a), is to have two jobs, one offset by 30 seconds:
# Need these to run on 30-sec boundaries, keep commands in sync.
* * * * * /path/to/executable param1 param2
* * * * * ( sleep 30 ; /path/to/executable param1 param2 )
You'll see I've added commen...
How to get the full url in Express?
...nt web site. In the case of X-Forwarded-Protocol, that is usually not send by the actual client (browser) but by the reverse proxy (nginx/varnish/apache/whatever) that is serving HTTPS in front of your application.
– Peter Lyons
Dec 19 '12 at 18:25
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Rails has_and_belongs_to_many migration
...d as a parameter to create_join_table called table_name. From the docs
By default, the name of the join table comes from the union of the
first two arguments provided to create_join_table, in alphabetical
order. To customize the name of the table, provide a :table_name
option:
...