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Is there any Rails function to check if a partial exists?
...e seen is that this will look in all view paths instead of just your rails root. This is important to me as I have a lot of rails engines.
This also works in Rails 4.
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Where can I set environment variables that crontab will use?
... I like this answer +1. Could/Should this be used when running root's crontab? There is no /home/root folder on my system and so I don't see how this would work with root's crontab. Ideas?
– Seamus
Jan 29 at 23:54
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Converting string to Date and DateTime
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Like we have date "07/May/2018" and we need date "2018-05-07" as mysql compatible
if (!empty($date)) {
$timestamp = strtotime($date);
if ($timestamp === FALSE) {
$timestamp = strtotime(str_replace('/', '-', $date));
}
$date = date('Y-m-d', $timestamp);
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How to extract a git subdirectory and make a submodule out of it?
...nstall
Usage
Split a larger into smaller chunks:
# Go into the project root
cd ~/my-project
# Create a branch which only contains commits for the children of 'foo'
git subtree split --prefix=foo --branch=foo-only
# Remove 'foo' from the project
git rm -rf ./foo
# Create a git repo for 'foo' (...
How to manually expand a special variable (ex: ~ tilde) in bash
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echo ${~root} give me no output on zsh (mac os x)
– Orwellophile
Jun 11 '15 at 0:59
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List all sequences in a Postgres db 8.1 with SQL
I'm converting a db from postgres to mysql.
19 Answers
19
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Oracle query to fetch column names
I have a mySQL query to get columns from a table like this:
12 Answers
12
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What is the most efficient way of finding all the factors of a number in Python?
...s will return all of the factors, very quickly, of a number n.
Why square root as the upper limit?
sqrt(x) * sqrt(x) = x. So if the two factors are the same, they're both the square root. If you make one factor bigger, you have to make the other factor smaller. This means that one of the two will ...
Calculating a directory's size using Python?
...thlib more and more, here's a pathlib solution:
from pathlib import Path
root_directory = Path('.')
sum(f.stat().st_size for f in root_directory.glob('**/*') if f.is_file())
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How to save an HTML5 Canvas as an image on a server?
...', $data);
$data = base64_decode($data);
mkdir($_SERVER['DOCUMENT_ROOT'] . "/photos");
file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/photos/".time().'.png', $data);
die;
?>
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