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Creating an R dataframe row-by-row
...
You can grow them row by row by appending or using rbind().
That does not mean you should. Dynamically growing structures is one of the least efficient ways to code in R.
If you can, allocate your entire data.frame up front:
N <- 1e4 # total number of rows ...
How to style a JSON block in Github Wiki?
Is there a way to nicely format/style JSON code in Github Wiki (i.e Markdown preferred)?
4 Answers
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Can anybody push to my project on github?
...e remote repo, and I refresh the page, I can see the changes are uploaded(for example, if I wrote a readme.txt and push it to the remote repo, where such a readme.txt did not exist, after push and refresh the page, it appears).
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How to run .APK file on emulator [duplicate]
I download an APK file and I want to run it on an Android emulator but I don't know how. Please help me. Thanks!
4 Answer...
Shell script while read line loop stops after the first line
... the target file (whose path is the input parameter to the script) and do work against each line. Now, it seems only work with the very first line in the target file and stops after that line got processed. Is there anything wrong with my script?
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Returning a value from thread?
... a lambda expression. Assign the "return" value to this variable from the worker thread and then once that thread ends you can use it from the parent thread.
void Main()
{
object value = null; // Used to store the return value
var thread = new Thread(
() =>
{
value = "Hello Wor...
Need to log asp.net webapi 2 request and response body to a database
...bApi2 hosted on IIS. I very simply would like to log the request body (XML or JSON) and the response body for each post.
6 ...
Difference between jQTouch and jQuery mobile
What is the difference between jQTouch & jQuery Mobile Framework ?
4 Answers
4
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How to draw a circle with text in the middle?
...le
.circle {
width: 500px;
height: 500px;
line-height: 500px;
border-radius: 50%;
font-size: 50px;
color: #fff;
text-align: center;
background: #000
}
<div class="circle">Hello I am A Circle</div>
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difference between each.with_index and each_with_index in Ruby?
...each_with_index does the same thing, but has no optional starting index.
For example:
[:foo, :bar, :baz].each.with_index(2) do |value, index|
puts "#{index}: #{value}"
end
[:foo, :bar, :baz].each_with_index do |value, index|
puts "#{index}: #{value}"
end
Outputs:
2: foo
3: bar
4: baz
...