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Omit rows containing specific column of NA
... a function thusly:
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
completeFun(DF, "y")
# x y z
# 1 1 0 NA
# 2 2 10 33
completeFun(...
Link to add to Google calendar
...r/render?action=TEMPLATE&text=Your+Event+Name&dates=20140127T224000Z/20140320T221500Z&details=For+details,+link+here:+http://www.example.com&location=Waldorf+Astoria,+301+Park+Ave+,+New+York,+NY+10022&sf=true&output=xml
Note the key query parameters:
text
dates
details
loca...
if arguments is equal to this string, define a variable like this string
... LAlex L
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123
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How to check if a variable is set in Bash?
...
(Usually) The right way
if [ -z ${var+x} ]; then echo "var is unset"; else echo "var is set to '$var'"; fi
where ${var+x} is a parameter expansion which evaluates to nothing if var is unset, and substitutes the string x otherwise.
Quotes Digression
Qu...
Scala list concatenation, ::: vs ++
... edited Aug 25 '14 at 21:22
Zoltán
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answered Jul 2 '11 at 23:15
...
How do browser cookie domains work?
...m
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answered Jun 30 '09 at 13:43
GumboGumbo
572k100100 gold badges725725...
Complex numbers usage in python [closed]
...(2,3)
(2+3j)
A complex number has some built-in accessors:
>>> z = 2+3j
>>> z.real
2.0
>>> z.imag
3.0
>>> z.conjugate()
(2-3j)
Several built-in functions support complex numbers:
>>> abs(3 + 4j)
5.0
>>> pow(3 + 4j, 2)
(-7+24j)
The standar...
Awaiting multiple Tasks with different results
...
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answered Jun 19 '13 at 17:42
Stephen ClearyStephen Cleary
349k6363 g...
Moment js date time comparison
...ror in the first line:
var date_time = 2013-03-24 + 'T' + 10:15:20:12 + 'Z'
That's not going to work. I think you meant:
var date_time = '2013-03-24' + 'T' + '10:15:20:12' + 'Z';
Of course, you might as well:
var date_time = '2013-03-24T10:15:20:12Z';
You're using: .tz('UTC') incorrectly....
parseInt(null, 24) === 23… wait, what?
... messing around with parseInt to see how it handles values not yet initialized and I stumbled upon this gem. The below happens for any radix 24 or above.
...