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How do I specify local .gem files in my Gemfile?
...y editing your Gemfile.
Specifying a :path attribute will install the gem from that path on your local machine.
gem "foreman", path: "/Users/pje/my_foreman_fork"
Alternately, specifying a :git attribute will install the gem from a remote git repository.
gem "foreman", git: "git://github.com/pje...
SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
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RESTful URL design for search
...hat they are standard and widely understood and that they can be generated from form-get.
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Is Meyers' implementation of the Singleton pattern thread safe?
...ms, while most forms of double-checked locking pattern variants may suffer from race conditions on certain architectures, unless instructions are interleaved with strategically places memory barriers.
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How do you run a single test/spec file in RSpec?
... want to execute your specs using Rake in order to ensure you are starting from a blank database.
– superluminary
Oct 2 '13 at 11:54
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How to get back to most recent version in Git?
I have recently moved from SVN to Git and am a bit confused about something. I needed to run the previous version of a script through a debugger, so I did git checkout <previous version hash> and did what I needed to do.
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Django: “projects” vs “apps”
...ework. The fact that everything, templates included, allows you to include from some common base means your blog should fit snugly into any other setup, simply by looking after its own part.
However, to address your actual concern, yes, nothing says you can't work with the top level project folder....
Which parts of Real World Haskell are now obsolete or considered bad practice?
...eady used 4.0.0.0, which introduced many changes. And that's just the jump from 6.8 to 6.10. The current version of GHC is 7.10. Monads have been changed. There's currently a discussion to remove return from Monad, so the Monad instance in Real World Haskell will really be out of sync with the real ...
How to plot two histograms together in R?
... new column in each that will be
# a variable to identify where they came from later.
carrots$veg <- 'carrot'
cukes$veg <- 'cuke'
# and combine into your new data frame vegLengths
vegLengths <- rbind(carrots, cukes)
After that, which is unnecessary if your data is in long format already...
Linq to EntityFramework DateTime
...as the EntityFunctions solution. Here, the second operand is not retrieved from another entity in query and can be computed prior to querying. If both operand were to be found in db, the EntityFunctions solution would still be suitable while the solution of this response would not work anymore.
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