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Make .gitignore ignore everything except a few files
I understand that a .gitignore file cloaks specified files from Git's version
control. I have a project (LaTeX) that generates lots of extra files (.auth,
.dvi, .pdf, logs, etc) as it runs, but I don't want those to be tracked.
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Can I concatenate multiple MySQL rows into one field?
...byte limit on the result. To solve this, run this query before your query:
SET group_concat_max_len = 2048;
Of course, you can change 2048 according to your needs. To calculate and assign the value:
SET group_concat_max_len = CAST(
(SELECT SUM(LENGTH(hobbies)) + COUNT(*) * LENGTH(', ')
FROM...
Serializing with Jackson (JSON) - getting “No serializer found”?
I get the an exception when trying to serialize a very simple object using Jackson. The error:
18 Answers
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What does inverse_of do? What SQL does it generate?
...rection. Which improves in performance. From Rails 4.1, inverse_of will be set automatically, if we uses foreign_key or changes in class name we need to set explicitly.
Best article for details and example.
http://viget.com/extend/exploring-the-inverse-of-option-on-rails-model-associations
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How to identify unused css definitions
...I haven't tested this solution.
Deadweight is a CSS coverage tool. Given a set of stylesheets and a set of URLs, it determines which selectors are actually used and lists which can be "safely" deleted. This tool is a ruby module and will only work with rails website. The unused selectors have to be ...
RSpec: What is the difference between a feature and a request spec?
... editor after snippets, if snippets enabled
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Disable double-tap “zoom” option in browser on touch devices
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you don't need JS to do that you can just set the CSS attribute pointer-events: none
– Pixelomo
Oct 1 '15 at 16:14
1
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How to prevent XSS with HTML/PHP?
...ges output.
Otherwise, use htmlentities($var, ENT_QUOTES | ENT_HTML5, $charset) and make sure the rest of your document uses the same character set as $charset. In most cases, 'UTF-8' is the desired character set.
Also, make sure you escape on output, not on input.
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Is there a difference between “raise exception()” and “raise exception” without parenthesis?
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Convert JavaScript string in dot notation into an object reference
...n interesting question in the comments:
how would you turn this into a setter as well? Not only returning the values by path, but also setting them if a new value is sent into the function? – Swader Jun 28 at 21:42
(sidenote: sadly can't return an object with a Setter, as that would violate ...