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How to extract img src, title and alt from html using php? [duplicate]
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Shading a kernel density plot between two points.
...x(which(dens$x < q95))
with(dens, polygon(x=c(x[c(x1,x1:x2,x2)]), y= c(0, y[x1:x2], 0), col="gray"))
Output (added by JDL)
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Immutable vs Mutable types
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What? Floats are immutable? But can't I do
x = 5.0
x += 7.0
print x # 12.0
Doesn't that "mut" x?
Well you agree strings are immutable right? But you can do the same thing.
s = 'foo'
s += 'bar'
print s # foobar
The value of the variable changes, but it changes by chang...
What is the best Battleship AI?
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+450
I second the motion to do a lot more games per match. Doing 50 games is just flipping a coin. I needed to do 1000 games to get any r...
Explain the use of a bit vector for determining if all characters are unique
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103
int checker is used here as a storage for bits. Every bit in integer value can be treated as a ...
Node.js + Nginx - What now?
...ng like:
# the IP(s) on which your node server is running. I chose port 3000.
upstream app_yourdomain {
server 127.0.0.1:3000;
keepalive 8;
}
# the nginx server instance
server {
listen 80;
listen [::]:80;
server_name yourdomain.com www.yourdomain.com;
access_log /var/log/...
TCP: can two different sockets share a port?
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answered Jun 20 '12 at 23:32
Remy LebeauRemy Lebeau
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Is it possible to change only the alpha of a rgba background colour on hover?
... { display: block; position: relative; }
div { position: absolute; bottom: 0; background-color: rgba(var(--rgb), 0.8); }
a:hover div { background-color: rgba(var(--rgb), 1); }
To understand how this works, see How do I apply opacity to a CSS color variable?
If custom properties are not an option,...
Generate a random double in a range
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edited Sep 27 '15 at 18:03
answered Sep 9 '10 at 21:17
mo...
How to get all possible combinations of a list’s elements?
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edited Jan 21 '09 at 12:52
answered Jan 21 '09 at 11:20
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