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Changing every value in a hash in Ruby

... @Andrew Marshall Right you are, thanks. In Ruby 1.8, Hash.[] doesn't accept an array of array pairs, it requires an even number of direct arguments (hence the splat up front). – Phrogz Mar 4 '11 at 3...
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How to turn off INFO logging in Spark?

I installed Spark using the AWS EC2 guide and I can launch the program fine using the bin/pyspark script to get to the spark prompt and can also do the Quick Start quide successfully. ...
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powershell 2.0 try catch how to access the exception

...tch [Net.WebException] { $_ | fl * -Force } I think it will give you all the info you need. My rule: if there is some data that is not displayed, try to use -force. share | improve this answe...
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Will Emacs make me a better programmer? [closed]

... who are merely good or competent will pick up an IDE and get to know it really well, and maybe do decently enough in it, but they'll restrict themselves to what the IDE provides for them. In other words, they adapt themselves to the IDE. The great programmers, on the other hand, will adapt their en...
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_=> what does this underscore mean in Lambda expressions?

... ChaosPandionChaosPandion 71.6k1616 gold badges110110 silver badges150150 bronze badges ...
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How to use PyCharm to debug Scrapy projects

... | edited Apr 26 '16 at 21:15 answered Mar 7 '14 at 16:04 ...
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Total memory used by Python process?

... answered Feb 7 '14 at 16:11 BasjBasj 23.9k5151 gold badges192192 silver badges372372 bronze badges ...
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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?

The NSObject method performSelector:withObject:afterDelay: allows me to invoke a method on the object with an object argument after a certain time. It cannot be used for methods with a non-object argument (e.g. ints, floats, structs, non-object pointers, etc.). ...
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json.dumps vs flask.jsonify

...dumps() method will just return an encoded string, which would require manually adding the MIME type header. See more about the jsonify() function here for full reference. Edit: Also, I've noticed that jsonify() handles kwargs or dictionaries, while json.dumps() additionally supports lists and oth...
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Setup RSpec to test a gem (not Rails)

...my_gem ) to setup the structure for the new gem and edit the *.gemspec manually. I also added s.add_development_dependency "rspec", ">= 2.0.0" to gemspec and did a bundle install . ...