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Is “ ” a replacement of “ ”?
...d its actual value. The lookup table is called a DTD, by the way.
You can read more about character entity references in the offical W3C documents.
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Create PostgreSQL ROLE (user) if it doesn't exist
...t to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answers
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Removing multiple keys from a dictionary safely
... extra line for existence checking personally, and it's significantly more readable unless you already know about pop(). On the other hand if you were trying to do this in a comprehension or inline lambda this trick could be a big help. I'd also say that it's important, in my opinion, to meet peop...
Firebug says “No Javascript on this page”, even though JavaScript does exist on the page
...has a 'debugger' option. See this page for a discussion on the migration. Read all the posts dated 19 November for further information.
It seems to me that the option gives less functionality but Firebug per se is never going to be fixed for Firefox 50 and beyond
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How to merge specific files from Git branches
...ile.py, make the other changes go away.
git checkout -B wip branch2
git read-tree branch1
git checkout branch2 file.py
git commit -m'merging only file.py history from branch2 into branch1'
git checkout branch1
git merge wip
Merge will never even look at any other file. You might need to '-f' t...
How can I capture the result of var_dump to a string?
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also remove the tags for readability (if you just want the string), using strip_tags(), this will simply return the type and value.
– Anil
Oct 10 '13 at 9:31
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Is there any Rails function to check if a partial exists?
... print something if the partial is missing, though?
Edit 1: Oh, I fail at reading comprehension. You did say that you wanted to render something else. In that case, how about this?
<%= render :partial => "#{dynamic_partial}" rescue render :partial => 'partial_that_actually_exists' %>...
Purge or recreate a Ruby on Rails database
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I read in The Rails 3 Way that loading the schema is the way to go, as opposed to running all the migrations. I don't remember exactly what their reasoning was but it seems to make sense. If the end result is the same either wa...
Ruby on Rails production log rotation
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To make this easier to read, it's worth mentioning that you can rely on the ActiveSupport bytes extensions : 50.megabytes is the same as 50 * 1024 * 1024, but much easier to understand. See ActiveSupport core extensions for more details.
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What is the advantage of using heredoc in PHP? [closed]
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Heredoc's are a great alternative to quoted strings because of increased readability and maintainability. You don't have to escape quotes and (good) IDEs or text editors will use the proper syntax highlighting.
A very common example: echoing out HTML from within PHP:
$html = <<<HTML
&...