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Get number of digits with JavaScript
...is casted to integer. x | 0 is just another short and fast version of Math.floor(x), which rounds down the number. You can achieve the same with ~~x. The following question provides more explaination on the point: stackoverflow.com/q/9049677/1249581.
– VisioN
A...
When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
...
To make it just show up in your JSP pages, you can use the Spring Security Tag Lib:
http://static.springsource.org/spring-security/site/docs/3.0.x/reference/taglibs.html
To use any of the tags, you must have the security taglib declared in your JSP:
<...
round() for float in C++
... is an implementation of round-half-up:
double round(double d)
{
return floor(d + 0.5);
}
The probable reason there is no round function in the C++98 standard library is that it can in fact be implemented in different ways. The above is one common way but there are others such as round-to-even,...
How to round a number to significant figures in Python
...ou need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.0232)
0.02
>>> round_to_1(1234243)
1000000.0
>>> round_to_1(13)
10.0
>>> round_...
The modulo operation on negative numbers in Python
...ator (divisor). Your expression yields 3 because
(-5) / 4 = -1.25 --> floor(-1.25) = -2
(-5) % 4 = (-2 × 4 + 3) % 4 = 3.
It is chosen over the C behavior because a nonnegative result is often more useful. An example is to compute week days. If today is Tuesday (day #2), what is the week day N...
How to concatenate two numbers in javascript?
...to multiply a by base B to the power of length b (using log base of b then flooring it to get the nearest whole number then adding 1 to it) then adding b.
So now our code looks like this:
a * Math.pow(10, Math.floor(Math.log10(b)) + 1) + b;
But wait, what if I wanted to do this in base 2 or ...
Correct way to convert size in bytes to KB, MB, GB in JavaScript
... 'GB', 'TB'];
if (bytes == 0) return '0 Byte';
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
}
Note : This is original code, Please use fixed version below. Aliceljm does not active her copied code anymore...
How to generate random number with the specific length in python
...'
'512'
Implemented as a function:
import random
def n_len_rand(len_, floor=1):
top = 10**len_
if floor > top:
raise ValueError(f"Floor {floor} must be less than requested top {top}")
return f'{random.randrange(floor, top):0{len_}}'
...
How do I round to the nearest 0.5?
... {
return passednumber;
}
else
{
return Math.Floor(passednumber / roundto) * roundto;
}
}
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What's the easiest way to call a function every 5 seconds in jQuery? [duplicate]
...// Time calculations for days, hours, minutes and seconds
var h = Math.floor(time / 3600);
var m = Math.floor(time % 3600 / 60);
var s = Math.floor(time % 3600 % 60);
// Display the result in the element with id="demo"
document.getElementById("demo").innerHTML = h + "h "
+ m + "m...