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Close file without quitting VIM application?
...artin, to completely delete the buffer, use :bw
– sebnow
Dec 2 '10 at 11:14
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How to add and get Header values in WebApi
...= null)
{
return NotFound();
}
return Ok(product);
}
Now we can send the request from page using JQuery:
$.ajax({
url: 'api/products/10',
type: 'GET',
headers: { 'username': 'test','password':'123' },
success: function (data) {
alert(data);
},
f...
Selecting only numeric columns from a data frame
...de
## nums <- sapply(x, is.numeric)
For a more idiomatic modern R I'd now recommend
x[ , purrr::map_lgl(x, is.numeric)]
Less codey, less reflecting R's particular quirks, and more straightforward, and robust to use on database-back-ended tibbles:
dplyr::select_if(x, is.numeric)
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...s even if the set is empty, so the function is never applied! As far as I know there is no other collection framework with an equivalent functionality. Yet from a user perspective this is how things are supposed to work.
The problem we have is that all the clever technology that makes this happen l...
Nearest neighbors in high-dimensional data?
...back on how to find the nearest neighbors for a given vector. My vector is now 21 dimensions and before I proceed further, because I am not from the domain of Machine Learning nor Math, I am beginning to ask myself some fundamental questions:
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Can you detect “dragging” in jQuery?
...n threshold on mouseup jsfiddle.net/W7tvD/1649 Works like a charm for me now, thanks!
– halfbit
Feb 26 '16 at 12:30
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Android : difference between invisible and gone?
...e idea with some pictures.
Assume that you have three buttons, like below
Now if you set visibility of Button Two as invisible (View.INVISIBLE), then output will be
And when you set visibility of Button Two as gone (View.GONE) then output will be
Hope this will clear your doubts.
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What's the opposite of chr() in Ruby?
...
Now that Ruby 1.9 has changed the meaning of 'A'[0], this is the more portable method.
– AShelly
Nov 22 '08 at 1:11
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How to remove unused imports from Eclipse
...
I know this is a very old thread. I found this way very helpful for me:
Go to Window → Preferences → Java → Editor → Save Actions.
Check the option "Perform the selected actions on save".
Check the option "Organize imp...
Is “double hashing” a password less secure than just hashing it once?
...rse the key derivation is discovered, an attacker still has to complete a known-plaintext attack.
How to break a password
Stored passwords need protection from an offline attack. If passwords aren't salted, they can be broken with a pre-computed dictionary attack (for example, using a Rainbow Tabl...