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What characters are allowed in DOM IDs? [duplicate]
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Actually there is a difference between HTML and m>X m>HTML.
As m>X m>HTML is m>X m>ML the rules for m>X m>ML IDs apply:
Values of type ID MUST match the Name production.
NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#m>x m>C0-#m>x m>D6] |
[#m>x m>D8-#m>x m>F6] | [#m>x m>F8-#m>x m>2FF] |
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Convert System.Drawing.Color to RGB and Hem>x m> Value
... and need your kind advice. In addition, I dont know whether there is any em>x m>isting method to do the same.
6 Answers
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How to count TRUE values in a logical vector
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There are some problems when logical vector contains NA values.
See for em>x m>ample:
z <- c(TRUE, FALSE, NA)
sum(z) # gives you NA
table(z)["TRUE"] # gives you 1
length(z[z == TRUE]) # f3lim>x m> answer, gives you 2 (because NA indem>x m>ing returns values)
So I think the safest is to use na.rm = TRUE:
s...
How dangerous is it to compare floating point values?
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First of all, floating point values are not "random" in their behavior. Em>x m>act comparison can and does make sense in plenty of real-world usages. But if you're going to use floating point you need to be aware of how it works. Erring on the side of assuming floating point works like real numbers wil...
What is the difference between __init__ and __call__?
...sed to do that:
class Foo:
def __init__(self, a, b, c):
# ...
m>x m> = Foo(1, 2, 3) # __init__
The second implements function call operator.
class Foo:
def __call__(self, a, b, c):
# ...
m>x m> = Foo()
m>x m>(1, 2, 3) # __call__
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Linear Regression and group by in R
... year=rep(1:10, 2),
response=c(rnorm(10), rnorm(10)))
m>x m>yplot(response ~ year, groups=state, data=d, type='l')
fits <- lmList(response ~ year | state, data=d)
fits
#------------
Call: lmList(formula = response ~ year | state, data = d)
Coefficients:
(Intercept) ye...
Convert HTML + CSS to PDF [closed]
I have an HTML (not m>X m>HTML) document that renders fine in Firefom>x m> 3 and IE 7. It uses fairly basic CSS to style it and renders fine in HTML.
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How to identify numpy types in python?
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Old question but I came up with a definitive answer with an em>x m>ample. Can't hurt to keep questions fresh as I had this same problem and didn't find a clear answer. The key is to make sure you have numpy imported, and then run the isinstance bool. While this may seem simple, if you are ...
Are list-comprehensions and functional functions faster than “for loops”?
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The following are rough guidelines and educated guesses based on em>x m>perience. You should timeit or profile your concrete use case to get hard numbers, and those numbers may occasionally disagree with the below.
A list comprehension is usually a tiny bit faster than the precisely equivalent ...
Find the division remainder of a number
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you are looking for the modulo operator:
a % b
for em>x m>ample:
26 % 7
Of course, maybe they wanted you to implement it yourself, which wouldn't be too difficult either.
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