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How to read data when some numbers contain commas as thousand separator?
..."num.with.commas")
setAs("character", "num.with.commas",
function(from) as.numeric(gsub(",", "", from) ) )
Then run read.csv like:
DF <- read.csv('your.file.here',
colClasses=c('num.with.commas','factor','character','numeric','num.with.commas'))
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node.js hash string?
...e md5sum.update(d) function to execute every time there is data being read from the ReadStream?
– DucRP
Jul 14 '15 at 17:01
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RESTful URL design for search
...hat they are standard and widely understood and that they can be generated from form-get.
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Python CSV error: line contains NULL byte
...at if the file is really dodgy e.g. no \r or \n within reasonable distance from the start of the file, the line number reported by reader.line_num will be (unhelpfully) 1. Find where the first \x00 is (if any) by doing
data = open('my.csv', 'rb').read()
print data.find('\x00')
and make sure that ...
Generating PDF files with JavaScript
I’m trying to convert XML data into PDF files from a web page and I was hoping I could do this entirely within JavaScript. I need to be able to draw text, images and simple shapes. I would love to be able to do this entirely in the browser.
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What are the differences between local branch, local tracking branch, remote branch and remote track
...t fetch or git pull.
git pull origin myNewBranch # Pulls new commits from branch "myNewBranch"
# on remote "origin" into remote tracking
# branch on your machine "origin/myNewBranch".
# Here "or...
R.exe, Rcmd.exe, Rscript.exe and Rterm.exe: what's the difference?
...t it is provided for backwards compatibility.
Rterm.exe is also a holdover from the days when Rcmd.exe was used. Can be ignored these days.
R CMD BATCH is a crutch that was needed in the days before littler and Rscript.exe, and similarly lingering from old docs and habits..
Rscript.exe is your frien...
Switch on ranges of integers in JavaScript [duplicate]
... switch statement does not provide a rationale to remove switch statements from all languages.
– xtempore
Jul 21 '14 at 8:03
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What do 'lazy' and 'greedy' mean in the context of regular expressions?
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Greedy will consume as much as possible. From http://www.regular-expressions.info/repeat.html we see the example of trying to match HTML tags with <.+>. Suppose you have the following:
<em>Hello World</em>
You may think that <.+> (. means ...
what is the basic difference between stack and queue?
...al Model
Pancake Stack (LIFO)
The only way to add one and/or remove one is from the top.
Line Queue (FIFO)
When one arrives they arrive at the end of the queue and when one leaves they leave from the front of the queue.
Fun fact: the British refer to lines of people as a Queue
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