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Functional design patterns [closed]

... serialization Specification-based testing Parsers Purely functional parallelism Purely functional state Part III: Functional design patterns The case for abstraction Monoids Functors Monads Applicative functors Traversable and foldable data structures Comonads Part IV: Breaking the...
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Java or Python for Natural Language Processing [closed]

...s you're heading a project. Other than NLTK (www.nltk.org), there are actually other libraries for text processing in python: TextBlob: http://textblob.readthedocs.org/en/dev/ Gensim: http://radimrehurek.com/gensim/ Pattern: http://www.clips.ua.ac.be/pattern Spacy:: http://spacy.io Orange: http:/...
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Ruby 'require' error: cannot load such file

...start your Ruby process from a different directory, you'll have to rethink all of those require statements. Using require to access files that are on the load path is a fine thing and Ruby gems do it all the time. But you shouldn't start the argument to require with a . unless you are doing someth...
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Using two values for one switch case statement

...Days); } } This is the output from the code: Number of Days = 29 FALLTHROUGH: Another point of interest is the break statement. Each break statement terminates the enclosing switch statement. Control flow continues with the first statement following the switch block. The break state...
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Are foreign keys really necessary in a database design?

...grammer to manipulate data in the correct way. Suppose a programmer is actually doing this in the right manner already, then do we really need the concept of foreign keys? ...
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Obstructed folders in Subversion

...olution can be to export the working copy (the entire checkout you have locally) to somewhere else. If you are using tortoisesvn, you get the option to "export un-versioned files", but I think if doing it from the command line it only exports versioned files so you might have a bit of a laborious t...
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Clicking a button within a form causes page refresh

... Nice! It really fetched to my scenario! – Richard Sep 24 '15 at 14:39 2 ...
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What's Pros and Cons: putting javascript in head and putting just before the body close

...p Your Web Site: The problem caused by scripts is that they block parallel downloads. The HTTP/1.1 specification suggests that browsers download no more than two components in parallel per hostname. If you serve your images from multiple hostnames, you can get more than two downloa...
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How to set DOM element as the first child?

I have element E and I'm appending some elements to it. All of a sudden, I find out that the next element should be the first child of E. What's the trick, how to do it? Method unshift doesn't work because E is an object, not array. ...
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Adding a column to an existing table in a Rails migration

...cord::Migration[5.0] def change end end In that case you have to manually an add_column to change: class AddEmailToUsers < ActiveRecord::Migration[5.0] def change add_column :users, :email, :string end end And then run rake db:migrate ...