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Run a callback only if an attribute has changed in Rails
...08383b974ae6c96faac5b4a3c81
Here is a blog post on these changes: https://www.ombulabs.com/blog/rails/upgrades/active-record-5-1-api-changes.html
Here is the summary I made for myself on the changes to ActiveRecord::Dirty in Rails 5.1+:
ActiveRecord::Dirty
https://api.rubyonrails.org/classes/Act...
Remove leading or trailing spaces in an entire column of data
...formation regarding ASAP Utilities and trimming can be found here:
http://www.asap-utilities.com/asap-utilities-excel-tools-tip.php?tip=87
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How can I create and style a div using JavaScript?
... }
Note: CSS lines borrowed from Ratal Tomal
JSFiddle: https://jsfiddle.net/Rani_Kheir/erL7aowz/
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...
What is the difference between and ?
...contents would be listed explicitly in the document’s outline.
(https://www.w3.org/TR/html/sections.html#the-section-element)
<div>
The <div> element has no special meaning at all. It represents its children. It can be used with the class, lang, and title attributes to mark up semant...
How to base64 encode image in linux bash / shell
...ble data back:
base64 -d DSC_0251.base64 > DSC_0251.JPG
See: http://www.greywyvern.com/code/php/binary2base64
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TemplateDoesNotExist - Django Error
... to 'side-step' this error message.
More info from the docs here: http://www.django-rest-framework.org/topics/browsable-api/#formats
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std::string formatting like sprintf
... Boost Format is not only big, but also very slow. See zverovich.net/2013/09/07/… and boost.org/doc/libs/1_52_0/libs/spirit/doc/html/spirit/karma/…
– vitaut
May 20 '14 at 1:43
...
nginx: send all requests to a single html page
..._core_module.html#try_files
So I ended up using the following:
root /var/www/mysite;
location / {
try_files $uri /base.html;
}
location = /base.html {
expires 30s;
}
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How to get the list of properties of a class?
...
@Tadej what framework are you targeting? if you're using .NET core you need to ensure you have the using System.Reflection directive and the System.Reflection.TypeExtensions package referenced - this provides the missing API surface via extension methods
– Marc...
How do I specify a password to 'psql' non-interactively?
...ORD=pass1234 psql -U MyUsername myDatabaseName
For reference, see http://www.postgresql.org/docs/current/static/libpq-envars.html
Edit
Since Postgres 9.2 there is also the option to specify a connection string or URI that can contain the username and password.
Using that is a security risk ...