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Best practice to run Linux service as a different user
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10
On Debian see /etc/init.d/skeleton. Add UID, GID variables and indo_start() use: start-stop-daemon --start --quiet --pidfile $PIDFILE --exe...
Remove NA values from a vector
...tc.)
Setting na.rm=TRUE does just what you're asking for:
d <- c(1, 100, NA, 10)
max(d, na.rm=TRUE)
If you do want to remove all of the NAs, use this idiom instead:
d <- d[!is.na(d)]
A final note: Other functions (e.g. table(), lm(), and sort()) have NA-related arguments that use diff...
Programmatically trigger “select file” dialog box
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10
Update: In modern browsers you can click an input that's not even in the DOM. Awesome!
– Adria
Oct 8...
Convert pandas dataframe to NumPy array
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edited May 10 '19 at 22:50
cs95
231k6060 gold badges390390 silver badges455455 bronze badges
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Domain Driven Design: Domain Service, Application Service
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answered Feb 17 '10 at 10:07
Vijay PatelVijay Patel
14.2k66 gold badges2727 silver badges3333 bronze badges
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List comprehension in Ruby
...mprehensionTest < ActionController::PerformanceTest
TEST_ARRAY = (1..100).to_a
def test_map_compact
1000.times do
TEST_ARRAY.map{|x| x % 2 == 0 ? x * 3 : nil}.compact
end
end
def test_select_map
1000.times do
TEST_ARRAY.select{|x| x % 2 == 0 }.map{|x| x * 3}
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How to replace a set of tokens in a Java String?
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10
This is how I would do it, except I would use Matcher's appendReplacement() and appendTail() methods to copy the unmatched text; there's no...
How to get index of object by its property in JavaScript?
...Attr(Data, 'token', '312312'); // returns 1
findWithAttr(Data, 'id_list', '10'); // returns -1
EDIT:
Updated function to return -1 when not found so it follows the same construct as Array.prototype.indexOf()
share
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Node.js/Express.js App Only Works on Port 3000
...on would be located though. Could this be an issue? FYI I'm running Ubuntu 10.04.
– Benjamin Martin
Aug 3 '13 at 2:49
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