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Regular expression to match numbers with or without commas and decimals in text
...sion below
#### NUMBERS AND DECIMALS ONLY ####
#No commas allowed
#Pass: (1000.0), (001), (.001)
#Fail: (1,000.0)
^\d*\.?\d+$
#No commas allowed
#Can't start with "."
#Pass: (0.01)
#Fail: (.01)
^(\d+\.)?\d+$
#### CURRENCY ####
#No commas allowed
#"$" optional
#Can't start with "."
#Either 0 or 2 ...
CSS transition shorthand with multiple properties?
...concise code.
/* prefixes omitted for brevity */
.box {
height: 100px;
width: 100px;
background: red;
box-shadow: red 0 0 5px 1px;
transition: all 500ms ease;
/*note: not transitioning width */
transition-property: height, background, box-shadow;
}
.box:h...
How to do math in a Django template?
...
You can use the add filter:
{{ object.article.rating_score|add:"-100" }}
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Overlaying histograms with ggplot2 in R
...'s a concrete example with some output:
dat <- data.frame(xx = c(runif(100,20,50),runif(100,40,80),runif(100,0,30)),yy = rep(letters[1:3],each = 100))
ggplot(dat,aes(x=xx)) +
geom_histogram(data=subset(dat,yy == 'a'),fill = "red", alpha = 0.2) +
geom_histogram(data=subset(dat,yy == 'b'...
jQuery If DIV Doesn't Have Class “x”
...t my example of use
If you hover over a div, it fades as
normal speed to 100% opacity if the
div does not contain the 'selected'
class
If you hover out of a div, it fades
at slow speed to 30% opacity if the
div does not contain the 'selected'
class
Clicking the button adds 'selected'
class to the ...
How to generate a range of numbers between two numbers?
I have two numbers as input from the user, like for example 1000 and 1050 .
28 Answers
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How do I print a double value with full precision using cout?
...= 1.1;
std::cout << std::hex << x.u64;
This will give you the 100% accurate precision of the double... and be utterly unreadable because humans can't read IEEE double format ! Wikipedia has a good write up on how to interpret the binary bits.
In newer C++, you can do
std::cout <<...
Round a double to 2 decimal places [duplicate]
... corner cases with either a very high number of decimal places (e.g. round(1000.0d, 17)) or large integer part (e.g. round(90080070060.1d, 9)). Thanks to Sloin for pointing this out.
I've been using the above to round "not-too-big" doubles to 2 or 3 decimal places happily for years (for example to ...
Real World Example of the Strategy Pattern
...
100
What about this:
You have to encrypt a file.
For small files, you can use "in memory" stra...
Child inside parent with min-height: 100% not inheriting height
...ontainer to occupy at least full height of a page, by setting min-height: 100%; . However, when I add a nested div and set height: 100%; , it doesn't stretch to container's height. Is there a way to fix it?
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