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Append value to empty vector in R?
...eople to say "R is slow", or "R loops should be avoided".
As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop.
Here are several ways to append values to a vector. All of them are discouraged.
Appending ...
When to use Amazon Cloudfront or S3
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Amazon S3 is designed for large-capacity, low-cost file storage in one specific geographical region.* The storage and bandwidth costs are quite low.
Amazon CloudFront is a Content Delivery Network (CDN) which proxies and caches web data at edge locations as close to users as possible.
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Loadbalancing web sockets
...Ps (not public), and optionally can run on ports different from the public one also. The only caveat is that you may need to tell the WebSocket servers what their public visible hostname, IP, port is, since conforming WebSocket servers will check that the URL supplied in the HTTP header of the WS ha...
Uncatchable ChuckNorrisException
...you can get this to work if you disable the byte code verifier! (-Xverify:none)
UPDATE 3:
For those following from home, here is the full script:
Create the following classes:
public class ChuckNorrisException
extends RuntimeException // <- Comment out this line on second compilation
{
...
How can I access my localhost from my Android device?
...USB doesn't provide network to mobile device.
If both your desktop and phone are connected to the same WiFi (or any other local network), then use your desktop IP address assigned by the router (not localhost and not 127.0.0.1).
To find out the IP address of your desktop:
type into the comman...
How do I bind Twitter Bootstrap tooltips to dynamically created elements?
...
Try this one:
$('body').tooltip({
selector: '[rel=tooltip]'
});
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Create code first, many to many, with additional fields in association table
...join table with additional properties you will have to create actually two one-to-many relationships. It could look like this:
public class Member
{
public int MemberID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public virtual ICollect...
How do I remove deleted branch names from autocomplete?
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One possible reason for this is that, if a remote branch (e.g. origin/myBranch) still exists, then git checkout myBranch will succeed as an alternative to git checkout -b myBranch origin/myBranch. This is intended as a conven...
How to make a vertical line in HTML
...ed not taboo but separating them is handy as then you can easily adjust in one place if needed. Also putting it in a separate CSS file is better for performance as it can be cached by the browser and you end up transmitting less bytes over the wire each time you request the rendered HTML.
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Dump Mongo Collection into JSON format
...json format? Either on the shell or using java driver.I am looking for the one with best performance.
5 Answers
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