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Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v

...f /usr/share/ruby-rvm /etc/rvmrc /etc/profile.d/rvm.sh open new terminal and validate environment is clean from old RVM settings (should be no output): env | grep rvm if there was output, try to open new terminal, if it does not help then restart your computer. install RVM: \curl -L https://g...
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Pass column name in data.table using variable [duplicate]

...n following example, I am creating a data table having column name ‘x’ and ‘v’ 1 Answer ...
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association

... To understand this, you must take a step back. In OO, the customer owns the orders (orders are a list in the customer object). There can't be an order without a customer. So the customer seems to be the owner of the orders. But in the...
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Is there any async equivalent of Process.Start?

...- it doesn't have any cancellation/timeout support, but it'll gather the standard output and standard error for you, at least. github.com/jamesmanning/RunProcessAsTask – James Manning Dec 3 '12 at 5:54 ...
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MySQL - Rows to Columns

... I'm going to add a somewhat longer and more detailed explanation of the steps to take to solve this problem. I apologize if it's too long. I'll start out with the base you've given and use it to define a couple of terms that I'll use for the rest of this p...
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Formatting “yesterday's” date in python

... If you happen to be working with pandas, you can as well use: print((pd.to_datetime('Today') - pd.Timedelta('1 days')).strftime('%m%d%y')) – etna Oct 2 '17 at 7:39 ...
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Git: “please tell me who you are” error

... I spend on it lots hours when i call php script to init and commit git. And i Found the work flow should Be: 1.git init 2.git config user.name "someone" 3.git config user.email "someone@someplace.com" 4.git add * 5.git commit -m "some init msg" If you swap [23] and 1, the confi...
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What's the fastest way to delete a large folder in Windows?

I want to delete a folder that contains thousands of files and folders. If I use Windows Explorer to delete the folder it can take 10-15 minutes (not always, but often). Is there a faster way in Windows to delete folders? ...
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cannot load such file — bundler/setup (LoadError)

...tion with Ruby 2.0, but I'm getting "Web application could not be started" and get this trace: 18 Answers ...
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How to calculate a mod b in Python?

... edited Jul 28 '19 at 15:58 wjandrea 12.3k55 gold badges2424 silver badges4747 bronze badges answered Jun 14 '09 at 10:58 ...