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PG::ConnectionBad - could not connect to server: Connection refused
...ding to Yosemite, the server log said: FATAL: could not open directory "pg_tblspc": No such file or directory. This answer helped me with that problem stackoverflow.com/questions/25970132/…
– Paul Kaplan
Oct 17 '14 at 13:54
...
Is < faster than
...(a <=901)
cmpl $901, -4(%rbp)
jg .L3
My example if is from GCC on x86_64 platform on Linux.
Compiler writers are pretty smart people, and they think of these things and many others most of us take for granted.
I noticed that if it is not a constant, then the same machine code is generated in...
How to play with Control.Monad.Writer in haskell?
..." ++ show (a `mod` b))
gcd' b (a `mod` b)
main :: IO()
main = mapM_ putStrLn $ snd $ W.runWriter (gcd' 8 3)
Code is currently runable here
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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...Hash keys are "simple" symbols (more or less something that matches /\A[a-z_]\w*\z/i, AFAIK the parser uses its label pattern for these keys).
The :$in style symbols show up a fair bit when using MongoDB so you'll end up mixing Hash styles if you use MongoDB. And, if you ever work with specific key...
What's the difference between URI.escape and CGI.escape?
...pe has been deprecated in Ruby 1.9.2... so use CGI::escape or ERB::Util.url_encode.
There is a long discussion on ruby-core for those interested which also mentions WEBrick::HTTPUtils.escape and WEBrick::HTTPUtils.escape_form.
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Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
... }
}
,100);
function LaunchApp(){
window.open("unknown://nowhere","_self");
};
LaunchApp()
</script>
</body>
</html>
Specifying and saving a figure with exact size in pixels
...for an example. Here's how to show an 800x800 pixel image in my monitor (my_dpi=96):
plt.figure(figsize=(800/my_dpi, 800/my_dpi), dpi=my_dpi)
So you basically just divide the dimensions in inches by your DPI.
If you want to save a figure of a specific size, then it is a different matter. Screen...
Globally override key binding in Emacs
...fter-load-functions 'my-keys-have-priority)
(defun my-keys-have-priority (_file)
"Try to ensure that my keybindings retain priority over other minor modes.
Called via the `after-load-functions' special hook."
(unless (eq (caar minor-mode-map-alist) 'my-keys-minor-mode)
(let ((mykeys (assq ...
Given an RGB value, how do I create a tint (or shade)?
...r lighter (tinted) color:
RGB:
To shade:
newR = currentR * (1 - shade_factor)
newG = currentG * (1 - shade_factor)
newB = currentB * (1 - shade_factor)
To tint:
newR = currentR + (255 - currentR) * tint_factor
newG = currentG + (255 - currentG) * tint_factor
newB = currentB + (255 - currentB...
Launch Bootstrap Modal on page load
... edited Oct 9 '17 at 11:56
JH_
41044 silver badges1313 bronze badges
answered Jul 22 '14 at 13:50
JPCSJPCS
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