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What are the differences between vector and list data types in R?
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As someone who's just gotten into R, but comes from a C/Java/Ruby/PHP/Python background, here's how I think of it.
A list is really an array + a hashmap. It's a PHP associative array.
> foo = list(bar='baz')
> foo[1]
'baz'
> foo$bar
'baz'
> foo[['bar']]
'baz'
A vector is a f...
How do you install ssh-copy-id on a Mac?
...ssh && cat >> ~/.ssh/authorized_keys"
credit goes to this site
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Download multiple files with a single action
... least it works in Edge. If you try downloading multiple files in IE on MS sites, for example, they spawn multiple pop-up windows, so i think best solution for IE is still from Dmitry Nogin above.
– Matěj Pokorný
May 12 '16 at 13:07
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Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...e it, RFC 1808, was written 15 years ago, and URL references are key to website functionality, I think it is safe to say that pretty much all major browsers do support it by now. But the only way to know for sure is to simply try it yourself and see what happens.
– Remy Lebeau...
When to use Amazon Cloudfront or S3
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Another major difference is that CloudFront allows you to mirror the site on your server. Cloudfront then caches the files such as images, mp3 or video using its content delivery network.
This saves you having to duplicate your assets as you would when you use Amazon S3.
However, after a fi...
How do I prevent node.js from crashing? try-catch doesn't work
From my experience, a php server would throw an exception to the log or to the server end, but node.js just simply crashes. Surrounding my code with a try-catch doesn't work either since everything is done asynchronously. I would like to know what does everyone else do in their production servers.
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Difference of Maven JAXB plugins
... What about ws.apache.org/jaxme/mp which is mentioned directly on Maven's site?
– rcl
Jul 19 '10 at 19:18
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Is generator.next() visible in Python 3?
... @MaikuMori I fixed the link (waiting for peer revision) (The site diveintopython3.org seems to be down. Mirror site diveintopython3.ep.io is still alive)
– gecco
Jan 5 '12 at 20:59
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CSS Font Border?
...ed to have a minified or compressed CSS version of your code on production sites and keep a commented uncompressed version for editing. The code above is a good example why a CSS code should be minified but needs to be separated line by line for editing.
– user950658
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Why is jquery's .ajax() method not sending my session cookie?
After logging in via $.ajax() to a site, I am trying to send a second $.ajax() request to that site - but when I check the headers sent using FireBug, there is no session cookie being included in the request.
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