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Truncate number to two decimal places without rounding
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Convert the number into a string, match the number up to the second decimal place:
function calc(theform) {
var num = theform.original.value, rounded = theform.rounded
var with2Decimals = num.toString().match(/^-?\d+(?:\.\d{0,2})?/)[0]
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Javascript: formatting a rounded number to N decimals
...s the same as 2.0000000000000. It's when you turn the rounded value into a string that you have make it display a certain number of digits.
You could just add zeroes after the number, something like:
var s = number.toString();
if (s.indexOf('.') == -1) s += '.';
while (s.length < s.indexOf('.')...
Two-way encryption: I need to store passwords that can be retrieved
...verification of source data
*
*/
class Encryption {
/**
* @var string $cipher The mcrypt cipher to use for this instance
*/
protected $cipher = '';
/**
* @var int $mode The mcrypt cipher mode to use
*/
protected $mode = '';
/**
* @var int $rounds The...
Debugging automatic properties
...n-auto-implemented-properties-with-visual-studio-2015/
class X {
public string name {
set;
get; // setting a breakpoint here will break in VS 2015!
}
}
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How can I convert string to datetime with format specification in JavaScript?
How can I convert a string to a date time object in javascript by specifying a format string?
15 Answers
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Best way to convert strings to symbols in hash
... (fastest/cleanest/straightforward) way to convert all keys in a hash from strings to symbols in Ruby?
31 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
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Back in perl, 'foobar' !~ /bar/ was perfectly perlish to test that the string doesn't contain "bar".
In Ruby, particularly with a modern style guide, I think a more explicit solution is more conventional and easy to understand:
input = 'foobar'
do_something unless input.match?(/bar/)
needs_ba...
How do I run Asynchronous callbacks in Playground
...of NSURLConnection):
import UIKit
import PlaygroundSupport
let url = URL(string: "http://stackoverflow.com")!
URLSession.shared.dataTask(with: url) { data, response, error in
guard let data = data, error == nil else {
print(error ?? "Unknown error")
return
}
let conte...
MongoDB relationships: embed or reference?
...n I rote this in 2011 twitter was still tied to text messages and Ruby 1.4 strings; in other words still ASCII chars only.
– John F. Miller
Sep 8 '17 at 18:52
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How can I reference the value of a final static field in the class?
......} in the Javadoc tool documentation, for instance, which uses java.lang.String.
– Marquis of Lorne
Aug 27 '19 at 4:56
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