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Cannot add or update a child row: a foreign key constraint fails
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Print array elements on separate lines in Bash?
...te argument, while "$*"
expands to the args merged into one argument: "$1c$2c..." (where c is
the first char of IFS).
You almost always want "$@". Same goes for "${arr[@]}".
Always quote them!
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facebook: permanent Page Access Token?
...hat appears in the "Access Token" field is your short-lived access token.
2. Generate Long-Lived Access Token
Following these instructions from the Facebook docs, make a GET request to
https://graph.facebook.com/v2.10/oauth/access_token?grant_type=fb_exchange_token&client_id={app_id}&c...
Reference — What does this symbol mean in PHP?
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Is onload equal to readyState==4 in XMLHttpRequest?
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It should be the same thing. onload was added in XMLHttpRequest 2 whereas onreadystatechange has been around since the original spec.
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How do I create a Python function with optional arguments?
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Force line-buffering of stdout when piping to tee
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edited Oct 9 '18 at 18:21
Greg Dubicki
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How to find out which JavaScript events fired?
... awesome is Visual Event:
http://www.sprymedia.co.uk/article/Visual+Event+2
It highlights all of the elements on a page that have been bound and has popovers showing the functions that are called. Pretty nifty for a bookmark! There's a Chrome plugin as well if that's more your thing - not sure abo...
Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
...te by suffixing it with ::date. Here, in psql, is a timestamp:
# select '2010-01-01 12:00:00'::timestamp;
timestamp
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2010-01-01 12:00:00
Now we'll cast it to a date:
wconrad=# select '2010-01-01 12:00:00'::timestamp::date;
date
------------
2010-01-01
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How to use SCNetworkReachability in Swift
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(This answer was extended repeatedly due to changes in the Swift language, which made it a bit...