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Sample random rows in dataframe

...ow make it better by checking first if n<=nrow(df) and stopping with an error. share | improve this answer | follow | ...
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How to initialize const member variable in a class?

...e the const member variable t with 100. But it's giving me the following error: 11 Answers ...
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Nginx — static file serving confusion with root & alias

..._max_body_size 10M; access_log /var/log/nginx/project.access.log; error_log /var/log/nginx/project.error.log; location /static { index index.html; } location /media { alias /home/ubuntu/project/media/; } } Server block to live the static page on nginx. ...
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From io.Reader to string in Go

.... Example: buf := new(strings.Builder) n, err := io.Copy(buf, r) // check errors fmt.Println(buf.String()) OUTDATED INFORMATION BELOW The short answer is that it it will not be efficient because converting to a string requires doing a complete copy of the byte array. Here is the proper (non-ef...
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Can I set max_retries for requests.request?

...t one thing bugs me. It is possible to get a requests.exception.ConnectionError with a message like: 5 Answers ...
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Git pull a certain branch from GitHub

... But I get an error "! [rejected]" and something about "non fast forward" That's because Git can't merge the changes from the branches into your current master. Let's say you've checked out branch master, and you want to merge in the rem...
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How to test my servlet using JUnit

...nks for you answer! But when I execute your code, then I get the following error: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale de_DE - It happens during the execution of new MyServlet().doPost(...). Any idea what could be broken? ...
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Reject binary with state waiting for review (can't find reject binary button)

... I set 2.0 both time. But got error saying redundant binary..finaly set version number to 2.1. and binary approved. – Guru Sep 14 '14 at 5:44 ...
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Android get free size of internal/external memory

...rmatSize(availableBlocks * blockSize); } else { return ERROR; } } public static String getTotalExternalMemorySize() { if (externalMemoryAvailable()) { File path = Environment.getExternalStorageDirectory(); StatFs stat = new StatFs(...
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Check if a variable is of function type

...rence (open your javascript console and reload page, there might be logged error messages). Note: Revision 3 added isFunctionD (based on only typeof == "function") - and it seems to be much faster than Underscore's "fast" version. – Joel Purra Feb 2 '12 at 18:3...