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Find difference between timestamps in seconds in PostgreSQL
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edited May 20 '14 at 15:58
altermativ
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What is the difference between NaN and None?
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109
NaN is used as a placeholder for missing data consistently in pandas, consistency is good. I u...
How do I convert a hexadecimal color to rgba with the Less compiler?
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edited Mar 30 '19 at 21:59
Peter Mortensen
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How to parse a JSON string into JsonNode in Jackson?
...per mapper = new ObjectMapper();
JsonNode actualObj = mapper.readTree("{\"k1\":\"v1\"}");
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Select every Nth element in CSS
...ment type, div. If you have any other elements of different types such as h1 or p, you will need to use :nth-of-type() instead of :nth-child() to ensure you only count div elements:
<body>
<h1></h1>
<div>1</div> <div>2</div>
<div>3</div> ...
Callback of .animate() gets called twice jquery
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163
animate calls its callback once for each element in the set you call animate on:
If suppli...
Emulating a do-while loop in Bash
...loop
actions() {
check_if_file_present
# Do other stuff
}
actions #1st execution
while [ current_time <= $cutoff ]; do
actions # Loop execution
done
Or:
while : ; do
actions
[[ current_time <= $cutoff ]] || break
done
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How to redirect single url in nginx?
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Put this in your server directive:
location /issue {
rewrite ^/issue(.*) http://$server_na...
How to read the mode field of git-ls-tree's output
...The following flags are defined for the st_mode field:
S_IFMT 0170000 bit mask for the file type bit fields
S_IFSOCK 0140000 socket
S_IFLNK 0120000 symbolic link
S_IFREG 0100000 regular file
S_IFBLK 0060000 block device
S_IFDIR 0...
Create dynamic URLs in Flask with url_for()
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answered Sep 20 '11 at 0:02
FogleBirdFogleBird
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