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Why is this program valid? I was trying to create a syntax error
...erl 5.14.2 on Windows 7. I wanted to mess around with a Git pre-commit hook to detect programs being checked in with syntax errors. (Somehow I just managed to do such a bad commit.) So as a test program I randomly jotted this:
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Passing variables to the next middleware using next() in Express.js
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Peter Mortensen
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answered Sep 18 '13 at 14:43
AmberlampsAmberl...
Newline in string attribute
How can I add a line break to text when it is being set as an attribute i.e.:
13 Answers
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How can I select an element by name with jQuery?
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zx485
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answered Jul 10 '09 at 1:21
Jon EricksonJon Eri...
Why is my git repository so big?
145M = .git/objects/pack/
12 Answers
12
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Assign null to a SqlParameter
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Chris TaylorChris Taylor
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Modular multiplicative inverse function in Python
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Maybe someone will find this useful (from wikibooks):
def egcd(a, b):
if a == 0:
return (b, 0, 1)
else:
g, y, x = egcd(b % a, a)
return (g, x - (b // a) * y, y)
def modinv(a, m):
g, x, y = egcd(a, m)
if g != 1:
raise Ex...
A CSS selector to get last visible div
A tricky CSS selector question, don't know if it's even possible.
10 Answers
10
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What's the difference between lapply and do.call?
..."numeric"
$Petal.Width
[1] "numeric"
$Species
[1] "factor"
do.call takes a function as input and splatters its other arguments to the function. It is widely used, for example, to assemble lists into simpler structures (often with rbind or cbind).
For example:
x <- lapply(iris, class)
do.c...
Run R script from command line
... terminal a new file called a.Rout will be created.
R CMD BATCH a.R
# Check the output
cat a.Rout
One other thing to note about using Rscript is that it doesn't load the methods package by default which can cause confusion. So if you're relying on anything that methods provides you'll want to loa...