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What should every JavaScript programmer know? [closed]
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edited May 23 '17 at 12:10
community wiki
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
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edited May 26 at 18:46
pfabri
48255 silver badges1717 bronze badges
answered Sep 30 '11 a...
Why does Java have transient fields?
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bharal
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answered May 26 '09 at 12:53
coobirdcoobird
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How to prevent ifelse() from turning Date objects into numeric objects
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You may use data.table::fifelse (data.table >= 1.12.3) or dplyr::if_else.
data.table::fifelse
Unlike ifelse, fifelse preserves the type and class of the inputs.
library(data.table)
dates <- fifelse(dates == '2011-01-01', dates - 1, dates)
str(dates)
# Date[1:5], format...
What is the relation between BLAS, LAPACK and ATLAS
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edited Jul 25 '13 at 12:49
answered Jul 25 '13 at 12:42
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Allow user to set up an SSH tunnel, but nothing else
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edited Dec 26 '13 at 4:08
answered Apr 22 '12 at 8:28
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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
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No, a List<Dog> is not a List<Animal>. Consider what you can do with a List<Anima...
How to deal with a slow SecureRandom generator?
...cure than any variant of "hash the current time together with the PID, add 27, and hope for the best". If all you need is random numbers for a game, though, or if you want the stream to be repeatable in future using the same seed for testing purposes, an insecure seed is still useful.
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How to prevent ajax requests to follow redirects using jQuery
...atus code describing a problem, the request is redirected to a page with a 200 header, describing the problem. I can't make any changes to this, so I need to solve it on the client somehow.
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