andand | The Maybe Monad in idiomatic Ruby | Functional Programming library
kandi X-RAY | andand Summary
kandi X-RAY | andand Summary
The Maybe Monad in idiomatic Ruby
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Top functions reviewed by kandi - BETA
- Return a new instance of this proxy
- Delegates to the user .
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QUESTION
I would like both bullet points to be TRUE for mtcars data set:
- cyl > 4 and mpg > 10
- vs > 0 or carb > 1
What's the 'proper' way to write this with dplyr? Is there some kind of visualization explaining and/or? The difference between "and and" "and, or, and" and that kind of thing. I think I got it correct below, but this always confuses me a bit. I think there's a chapter in R inferno called "and and andand" that satires this type of situation.
...ANSWER
Answered 2018-Mar-30 at 20:16Your expression is fine - you can treat each ,
in filter(...)
like &
as far as I can tell:
QUESTION
I have a program, which calculate many things. While I run the code by ruby code.rb everything is okay. The problem starts, when I want to run it by command line with additional option: ruby code.rb --time 201712121100.
The piece of problematic code is below:
...ANSWER
Answered 2017-Dec-20 at 16:59The issue is here:
QUESTION
Step 01 : I have a column A in table tab_T contains that strings :
...ANSWER
Answered 2017-Jul-20 at 17:23I know this is not full answer for your question. But maybe it can help you:
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On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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