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Can javax.persistence.Query.getResultList() return null?
...t it right?
No matter what, I would code defensively and check for null.
Now the big question: should we treat "null" and an empty List as synonymous? This is where the specs should help us, and don't.
My guess is that a null return (if indeed it could happen) would be equivalent to "I didn't un...
Add custom icons to font awesome
...ab, fas, far, fal) you'll be at greater risk of a naming conflict—if not now, then possibly in the future as we continue adding icons with those standard prefixes. Using a custom prefix won't make an svg any less likely to "fit into the website"—but I'm not sure what you mean by that phrase, so ...
How to override and extend basic Django admin templates?
... This answer was very good for the older Django versions. But as of now, Another answer by Cheng is more relevant. stackoverflow.com/a/29997719/7344164
– DevLoverUmar
Jul 15 at 5:12
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Adding a library/JAR to an Eclipse Android project
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Now for the missing class problem.
I'm an Eclipse Java EE developer and have been in the habit for many years of adding third-party libraries via the "User Library" mechanism in Build Path. Of course, there are at least 3 wa...
Hadoop “Unable to load native-hadoop library for your platform” warning
...y install, it is here:
/opt/hadoop/lib/native/libhadoop.so.1.0.0
And I know it is 64-bit:
[hadoop@VMWHADTEST01 native]$ ldd libhadoop.so.1.0.0
./libhadoop.so.1.0.0: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by ./libhadoop.so.1.0.0)
linux-vdso.so.1 => (0x00007fff43510000)
lib...
In Python, how can you load YAML mappings as OrderedDicts?
... pypy for some time (although considered CPython implementation detail for now).
Update: In python 3.7+, the insertion-order preservation nature of dict objects has been declared to be an official part of the Python language spec, see What's New In Python 3.7.
I like @James' solution for its simpl...
How do I set up email confirmation with Devise?
...devise:views # global
rails generate devise:views users # scoped
You can now override the mailer views in devise/mailer/confirmation_instructions.html.erb or users/mailer/confirmation_instructions.html.erb depending on your setup
4. For development environment add the following config lines in /c...
Is there an interactive way to learn Vim? [closed]
...that didn't involve a wall of text, or scrolling through vimtutor without knowing the commands to do so. I wondered if anything else existed for such a purpose.
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What is the dependency inversion principle and why is it important?
... Consider a dependancy graph for some objects. Apply DIP to the objects. Now any object will be indpendent of the implementation of the other objects. Unit testing is now simple. Later refactoring for reuse is possible. Design changes have very limited change scopes. Design problems don not cascad...
Rename MySQL database [duplicate]
I created a database with the name of hrms . Now I need to change database name to sunhrm . But, It is disabled in MySQL workbench. Can I do that on the Linux server itself?
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