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How to tell if rails is in production?
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If its Rails 3.1+, Rails.env.production? will return true when in production.
Rails.env.production? #=> true
Rails.env.staging? #=> false
Rails.env.development? #=> false
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Programmatically creating Markdown tables in R with KnitR
... 1.30
4 4.60 3.10 1.50
5 5.00 3.60 1.40
6 5.40 3.90 1.70
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RSpec: how to test if a method was called?
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To fully comply with RSpec ~> 3.1 syntax and rubocop-rspec's default option for rule RSpec/MessageSpies, here's what you can do with spy:
Message expectations put an example's expectation at the start, before you've invoked the
code-under-test. Many...
Select by partial string from a pandas DataFrame
...')] for filtering out non-string-type columns.
– François Leblanc
Feb 13 '18 at 20:22
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Changing all files' extensions in a folder with one command on Windows
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NOTE: not for Windows
Using ren-1.0 the correct form is:
"ren *.*" "#2.jpg"
From man ren
The replacement pattern is another filename with embedded wildcard
indexes, each
of which consists of the character # followed by a digit from 1 to 9...
log4j configuration via JVM argument(s)?
...o ok:
java -Dlog4j.configuration=file:".\log4j.properties" -jar com.your-1.0-SNAPSHOT.jar
or
java -Dlog4j.configuration=file:".\log4j.xml" -jar com.your-1.0-SNAPSHOT.jar
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nodeValue vs innerHTML and textContent. How to choose?
...ed Aug 28 '19 at 19:46
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Jan 24 '18 at 16:47
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disable maven download progress indication
...ansferListener=warn
Note: As far as I am aware this only works for maven 3.1 and above.
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CSS way to horizontally align table
...R/html4/strict.dtd">
or
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
True, IE5.5 and below will still refuse to center the table but perhaps you can live with that, especially if the page is still functional with the tab...
Using python “with” statement with try-except block
...tement can make things less error prone. In newer versions of Python (2.7, 3.1), you can also combine multiple expressions in one with statement. For example:
with open("input", "r") as inp, open("output", "w") as out:
out.write(inp.read())
Besides that, I personally regard it as bad habit to...