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Rails “validates_uniqueness_of” Case Sensitivity
... If you do not have a database constraint, the insert will succeed and you now have two rows with 'foo' as the name.
See also "Concurrency and integrity" in the validates_uniqueness_of Rails documentation.
From Ruby on Rails 3rd Edition:
...despite its name, validates_uniqueness_of doesn’t ...
Use git “log” command in another folder
...
wow, and nothing in the man page! What a shame. (ok, now I see it added in 2.7 man page)
– akostadinov
Feb 5 '16 at 9:34
...
NAnt or MSBuild, which one to choose and when?
...'ve noticed the MSBuild documentation has been improved and is much better now (probably on par with NAnt).
Not easy to figure out how to edit the build script source (*.*proj file) directly from within Visual Studio. With NAnt I just have Visual Studio treat the .build script as an XML file.
Appare...
When maven says “resolution will not be reattempted until the update interval of MyRepo has elapsed”
...o add the '-U' parameter to your maven command, e.g. mvn clean compile -U. Now, you can run this maven command either through command line or through Eclipse by ticking the 'always update snapshot' box. Not sure, I use intellij these days. The 'configuring a scheduled task' part refers to a particul...
Command-line Tool to find Java Heap Size and Memory Used (Linux)?
...on you should do it within code or you can use jconsole. This is what I know there should also be many other ways.
– padippist
Jan 18 '17 at 6:47
2
...
Date query with ISODate in mongodb doesn't seem to work
...-04-28T03:26:42.609Z"),
"flightId" : "590170f97cb84116075e2680",
now i want to find every 27th date document.so i used this....
> db.users.find({createdAt:{"$gte":ISODate("2017-04-27T00:00:00Z"),"$lt":ISODate("2017-04-28T00:00:00Z") }}).count()
result:1
this worked for me.
...
What is the difference between a regular string and a verbatim string?
... I wonder why Resharper suggests this change. Do any CLR gurus know if verbatim strings are processed more efficiently since escape characters can be ignored?
– Matt Peterson
Jul 22 '10 at 18:25
...
Why would one use REST instead of SOAP based services? [closed]
...emember XML is designed to be human readable, though is verbose as we all know.
– Howard May
May 11 '09 at 16:07
6
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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 =...
What are the differences between Chosen and Select2?
...e ExpressionEngine add-on MX Select Plus (it is how I got here as there is now a competing add-on using Select2).
– notacouch
Jun 10 '13 at 17:20
...