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What is the best way to convert an array to a hash in Ruby

...n, please see Marc-André Lafortune's answer below. This answer was originally offered as an alternative to approaches using flatten, which were the most highly upvoted at the time of writing. I should have clarified that I didn't intend to present this example as a best practice or an efficient ap...
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Error “The goal you specified requires a project to execute but there is no POM in this directory” a

... I edit my command by adding quotes for every parameter like this: mvn install:install-file "-DgroupId=org.mozilla" "-DartifactId=jss" "-Dversion=4.2.5" "-Dpackaging=jar" "-Dfile=C:\Users\AArmijos\workspace\componentes-1.0.4\deps\jss-4.2.5.jar" It's worked. ...
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ActiveMQ or RabbitMQ or ZeroMQ or [closed]

...velopes are quite big. ZeroMq is a very lightweight messaging system specially designed for high throughput/low latency scenarios like the one you can find in the financial world. Zmq supports many advanced messaging scenarios but contrary to RabbitMQ, you’ll have to implement most of them yourse...
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Squash the first two commits in Git? [duplicate]

... Update July 2012 (git 1.7.12+) You now can rebase all commits up to root, and select the second commit Y to be squashed with the first X. git rebase -i --root master pick sha1 X squash sha1 Y pick sha1 Z git rebase [-i] --root $tip This command can now be used to ...
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converting CSV/XLS to JSON? [closed]

...l I made: Mr. Data Converter It converts to JSON, XML and others. It's all client side, too, so your data never leaves your computer. share | improve this answer | follow...
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How can I read command line parameters from an R script?

...t. In the result you'll get: example.png with some plot exmpl.batch with all that was done You could also add an environment variable %R_Script%: "C:\Program Files\R-3.0.2\bin\RScript.exe" and use it in your batch scripts as %R_Script% <filename.r> <arguments> Differences between...
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How do I determine whether my calculation of pi is accurate?

...various methods to implement a program that gives the digits of pi sequentially. I tried the Taylor series method, but it proved to converge extremely slowly (when I compared my result with the online values after some time). Anyway, I am trying better algorithms. ...
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Sort ArrayList of custom Objects by property

I read about sorting ArrayLists using a Comparator but in all of the examples people used compareTo which according to some research is a method for Strings. ...
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How to list the properties of a JavaScript object?

... keys; } Alternatively replace var getKeys with Object.prototype.keys to allow you to call .keys() on any object. Extending the prototype has some side effects and I wouldn't recommend doing it. share | ...
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Python pip install fails: invalid command egg_info

I find that recently often when I try to install a Python package using pip , I get the error(s) below. 15 Answers ...