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Extracting an attribute value with beautifulsoup
...ending on what you want exactly you either should do:
output = input_tag[0]['value']
or use .find() method which returns only one (first) found element:
input_tag = soup.find(attrs={"name": "stainfo"})
output = input_tag['value']
...
Installing Bootstrap 3 on Rails App
I'm trying to install Bootstrap 3.0 on my Rails app. I recently finished Michael Hartl's tutorial and am now trying to build my own system using this new version of Bootstrap, but I have a few questions that I'm not sure about.
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How to tell whether a point is to the right or left side of a line
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204
Use the sign of the determinant of vectors (AB,AM), where M(X,Y) is the query point:
position ...
How to trigger the window resize event in JavaScript?
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401
Where possible, I prefer to call the function rather than dispatch an event. This works well if...
What is “rvalue reference for *this”?
...t;
t.f(); // lvalue
test().f(); // rvalue
}
Output:
$ clang++ -std=c++0x -stdlib=libc++ -Wall -pedantic t.cpp
$ ./a.out
lvalue object
rvalue object
The whole thing is done to allow you to take advantage of the fact when the object the function is called on is an rvalue (unnamed temporary, for ...
Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
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20 Answers
20
Active
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Omit rows containing specific column of NA
... put it into a function thusly:
DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA), z=c(NA, 33, 22))
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
completeFun(DF, "y")
# x y z
# 1 1 0 NA
# 2 2 10 33
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How to request Administrator access inside a batch file
...REM --> If error flag set, we do not have admin.
if '%errorlevel%' NEQ '0' (
echo Requesting administrative privileges...
goto UACPrompt
) else ( goto gotAdmin )
:UACPrompt
echo Set UAC = CreateObject^("Shell.Application"^) > "%temp%\getadmin.vbs"
set params= %*
echo UAC.S...
How to return PDF to browser in MVC?
... line in your controller action would be something like:
return File("Chap0101.pdf", "application/pdf");
If you are generating this PDF dynamically, it may be better to use a MemoryStream, and create the document in memory instead of saving to file. The code would be something like:
Document doc...