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Standard deviation of a list
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153
Since Python 3.4 / PEP450 there is a statistics module in the standard library, which has a meth...
Show pending migrations in rails
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rake db:migrate:status (Rails 3 to 5) or rails db:migrate:status (Rails 5) will accomplish this. See this commit.
up means the migration has been run. down means the migration has not been run.
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How to not run an example using roxygen2?
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Use \dontrun{}
#'@examples
#'\dontrun{
#'geocode("3817 Spruce St, Philadelphia, PA 19104")
#'geocode("Philadelphia, PA")
#'dat <- data.frame(value=runif(3),address=c("3817 Spruce St, Philadelphia, PA 19104","Philadelphia, PA","Neverneverland"))
#'geocode(dat)
#'}
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ruby convert array into function arguments
...ray into an argument list with the * (or "splat") operator:
a = [0, 1, 2, 3, 4] # => [0, 1, 2, 3, 4]
b = [2, 3] # => [2, 3]
a.slice(*b) # => [2, 3, 4]
Reference:
Array to Arguments Conversion
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How do you round a floating point number in Perl?
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13 Answers
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Mongodb Explain for Aggregation framework
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3 Answers
3
Active
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Installing Bootstrap 3 on Rails App
I'm trying to install Bootstrap 3.0 on my Rails app. I recently finished Michael Hartl's tutorial and am now trying to build my own system using this new version of Bootstrap, but I have a few questions that I'm not sure about.
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How to copy directories in OS X 10.7.3?
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George Stocker
53.8k2929 gold badges165165 silver badges230230 bronze badges
answered Mar 20 '12 at 21:02
Andy Friese...
Parse JSON String into a Particular Object Prototype in JavaScript
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13 Answers
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How to implement “select all” check box in HTML?
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316
<script language="JavaScript">
function toggle(source) {
checkboxes = document.getElem...