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Is it possible to have a multi-line comments in R? [duplicate]

I found this old thread (from over a year ago), which explains how come R doesn't support a multi-line comments (like /* comment */ of PHP, for example). ...
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Memoization in Haskell?

Any pointers on how to solve efficiently the following function in Haskell, for large numbers (n > 108) 8 Answers ...
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How to disable / enable dialog negative positive buttons?

...ield is empty I would like to disable the positiveButton . I can get a charListener for the text field but I am not sure how I am going to set the positivebutton to disable or enable from that listener? What is the reference for the positive and negative buttons? ...
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Scala: Abstract types vs generics

I was reading A Tour of Scala: Abstract Types . When is it better to use abstract types? 4 Answers ...
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Why can't Python's raw string literals end with a single backslash?

Technically, any odd number of backslashes, as described in the documentation . 12 Answers ...
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How does Haskell printf work?

...ype safety is second to none only to dependently-typed languages. But there is some deep magic going on with Text.Printf that seems rather type-wonky. ...
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How can I change the color of AlertDialog title and the color of the line under it

I changed the color of an AlertDialog title using this command 14 Answers 14 ...
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How to get HTTP Response Code using Selenium WebDriver

I have written tests with Selenium2/WebDriver and want to test if HTTP Request returns an HTTP 403 Forbidden. 9 Answers ...
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Use PHP to create, edit and delete crontab jobs?

Is it possible to use PHP to create, edit and delete crontab jobs? 12 Answers 12 ...
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Determine font color based on background color

Given a system (a website for instance) that lets a user customize the background color for some section but not the font color (to keep number of options to a minimum), is there a way to programmatically determine if a "light" or "dark" font color is necessary? ...