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How do I use boolean variables in Perl?
... the right argument. Its not boolean but sometimes you may want to know if one argument ir equal or less than or greater than the other instead of just equal or not equal.
– user118435
Jun 24 '09 at 6:47
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“Conversion to Dalvik format failed with error 1” on external JAR
... after javadoc generated code will works fine.Please check this too if any one still occurs.
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NoSQL (MongoDB) vs Lucene (or Solr) as your database
...ly easier transition for programmers detoxing from the RDBMS world. Unless one's used to it Lucene & Solr have a steeper learning curve.
There aren't many examples of using Lucene/Solr as a datastore, but Guardian has made some headway and summarize this in an excellent slide-deck, but they too ...
Creating an empty Pandas DataFrame, then filling it?
...ating a data frame with index x 0 dimensions (columns = []), and attaching one column in each turn of a loop. I mean df[col_name] = pandas.Series([...]) in a loop iterating through column names. In the former case, not only the memory allocation takes time, but replacing NaNs with new values seems e...
Why is try {…} finally {…} good; try {…} catch{} bad?
...exception within their scope. Anything else should be passed along for someone else to handle. If I have an application that gets a file name from users then reads the file, and my file reader gets an exception opening the file, it should pass them up (or consume the exception and throw a new one) s...
How do I clone a generic List in Java?
...ist<String> that I'd like to return a copy of. ArrayList has a clone method which has the following signature:
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How do you serialize a model instance in Django?
...is your model instance
dict_obj = model_to_dict( obj )
You now just need one straight json.dumps call to serialize it to json:
import json
serialized = json.dumps(dict_obj)
That's it! :)
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Delete commits from a branch in Git
...asked for an already made commit. If you reset --hard, and check the log --oneline --all, the commits still remain in the tree. How do we delete these commits from tree? Thanks.
– iGbanam
Mar 17 '13 at 3:09
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Force Intellij IDEA to reread all maven dependencies
...t and I do this. Does this command apply to all modules, just the selected one, or the first one in the project when it runs?
– slartibartfast
Sep 25 '15 at 22:06
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Is there any significant difference between using if/else and switch-case in C#?
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Hey, I owe you an apology. Sorry for being a bone head.
– Scott Wisniewski
Dec 28 '08 at 8:39
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