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What is unit testing and how do you do it? [duplicate]
... site is a good introduction to the what and the how
http://www.nunit.org/index.php?p=quickStart&r=2.5
Is everything testable? Generally if it calculates something then yes. UI code is a whole other problem to deal with though, as simulating users clicking on buttons is tricky.
What should yo...
Remove duplicate dict in list in Python
...n the rest of the initial list (this notion is only accessible through the index n, hence the use of enumerate).
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Get pandas.read_csv to read empty values as empty string instead of nan
... Documentation for read_csv now offers both na_values (list or dict indexed by columns) and keep_default_na (bool). The keep_default_na value indicates whether pandas' default NA values should be replaced or appended to. The OP's code doesn't work currently just because it's missing this flag...
Spark java.lang.OutOfMemoryError: Java heap space
... and nested case classes). If possible try to only use primitive types and index all non-primitives especially if you expect a lot of duplicates. Choose WrappedArray over nested structures whenever possible. Or even roll out your own serialisation - YOU will have the most information regarding how ...
How to pass multiple parameters in a querystring
... map via the ismap attribute on the element with a construction
an indexed search via the now deprecated element
Web forms
The main use of query strings is to contain the content of an HTML form, also known as web form. In particular, when a form containing the fields field1, field2, field...
Database Design for Revisions?
... much in terms of a performance hit. You could use an xml schema and even indexes to get over possible performance problems. Your comment about parsing the xml is valid but you could easily create a view using xquery - which you can include in queries and join to. Something like this...
CREAT...
What does 'synchronized' mean?
...e hoods.
Sources
http://docs.oracle.com/javase/specs/jls/se8/html/index.html
Java® Language Specification, 2015-02-13
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Difference between one-to-many and many-to-one relationship
... Foo
Since Bar.Foo is a Reference, a Foreign Key, and there is no unique index on it, there can be many rows for any given value of Foo
Therefore the relation Foo::Bar is one-to-many
Now you can perceive (look at) the relation the other way around, Bar::Foo is many-to-one
But do not let th...
Bug With Firefox - Disabled Attribute of Input Not Resetting When Refreshing
...ame '*.html' -exec perl -pi -e \
's/(?<=<button )(.*?)(?=>)/@{[(index($1,"autocomplete=")!=-1?"$1":"$1 autocomplete=\"off\"")]}/g' \
{} +
The assumptions are:
Opening <button> tags begin and end on the same line. If this is not the case (i.e. they might be split over several l...
How to get rspec-2 to give the full trace associated with a test failure?
...nd run just the spec that had the error:
bin/rspec -b spec/requests/posts/index_spec.rb
Go back to the tail of the log and you should see the error, hopefully without too much other stuff surrounding it (because you ran the failing test by itself).
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