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Using Rails serialize to save hash to database
...PDATED:
Exact implementation will depend on your database, but PostgreSQL now has json and jsonb columns which can natively store your hash/object data and allow you to query against the JSON with ActiveRecord!
change your migration and you're done.
class Migration0001
def change
add_column...
Convert Mercurial project to Git [duplicate]
...ort your existing mercurial repository into a 'GitHub' repository, you can now simply use GitHub Importer available here [Login required]. No more messing around with fast-export etc. (although its a very good tool)
You will get all your commits, branches and tags intact. One more cool thing is tha...
Why doesn't CSS ellipsis work in table cell?
...width: 50px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
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How do I efficiently iterate over each entry in a Java Map?
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To summarize the other answers and combine them with what I know, I found 10 main ways to do this (see below). Also, I wrote some performance tests (see results below). For example, if we want to find the sum of all of the keys and values of a map, we can write:
Using iterator and Ma...
Should functions return null or an empty object?
...thy problem, that should happen higher up -- the throwing method needs to know more about where that ID came from, etc.
– Jacob Mattison
Oct 26 '09 at 18:50
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Symfony 2 EntityManager injection in service
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Update to my own solution. The proper way now should be to use Entities and Repositories. Entity Manager is already naturally injected into a repository. You can see an example here: youtu.be/AHVtOJDTx0M
– Robert Saylor
Oct 1 '1...
Sending HTML email using Python
...ls.encode(htmlin, pout, 'quoted-printable')
htmlin.close()
#
# Now that we're done, close our writer and
# return the message body
#
writer.lastpart()
msg = out.getvalue()
out.close()
print msg
return msg
if __name__=="__main__":
import smtplib
html =...
Changing selection in a select with the Chosen plugin
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FYI: they've updated to 1.0 which now uses chosen:updated instead of liszt:updated
– Henesnarfel
Jul 31 '13 at 14:10
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How to import other Python files?
...tartuphook:
Update: This example used to work for both python2 and 3, but now only works for python2. python3 got rid of this user startuphook feature set because it was abused by low-skill python library writers, using it to impolitely inject their code into the global namespace, before all user-...
Bash, no-arguments warning, and case decisions
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RE: "exit 0". I don't know if exiting the script was what he had in mind. But yes, that's an excellent guide.
– Trampas Kirk
Mar 11 '10 at 19:35
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