number-formatting

How to format numbers like SO with C#? 10, 5k, ... Like this: ( EDIT : Tested) static string FormatNumber(int num) { if (num >= 100000) return FormatNumber(num / 1000) + "K"; if (num >= 10000) { return (num / 1000D).ToString("0.#") + "K"; } return num.ToString("#,0"); } Examples: 1 => 1 23 => 23 136 => 136 6968 => 6,968 23067 => 23.1K 133031 => 133K Note that this will give strange values for numbers >= 10 8 . For example, 12345678 becomes 12.3KK . The code below is tested up to int.MaxValue This is not the most beautiful code but is most efficient. But you can use it as: 123.KiloFormat();

I have a text field where the user enters data. It's a phone number field. If the user enters 1234567890 , I want it displayed as (123)-(456)-7890 as the user types. How is this possible? wan This will help you Format (xxx) xxx-xxxx - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { int length = (int)[self getLength:textField.text]; //NSLog(@"Length = %d ",length); if(length == 10) { if(range.length == 0) return NO; } if(length == 3) { NSString *num = [self formatNumber:textField.text]; textField.text = [NSString

I need to round down a decimal in PHP to two decimal places so that: 49.955 becomes... 49.95 I have tried number_format , but this just rounds the value to 49.96 . I cannot use substr because the number may be smaller (such as 7.950). I've been unable to find an answer to this so far. Any help much appreciated. This can work: floor($number * 100) / 100 Here is a nice function that does the trick without using string functions: <?php function floorp($val, $precision) { $mult = pow(10, $precision); // Can be cached in lookup table return floor($val * $mult) / $mult; } print floorp(49.955, 2); ?>

I want to format a number to have two digits. The problem is caused when 0 – 9 is passed, so I need it to be formatted to 00 – 09 . Is there a number formatter in JavaScript? Joseph Marikle The best method I've found is something like the following: (Note that this simple version only works for positive integers) var myNumber = 7; var formattedNumber = ("0" + myNumber).slice(-2); console.log(formattedNumber); For decimals, you could use this code (it's a bit sloppy though). var myNumber = 7.5; var dec = myNumber - Math.floor(myNumber); myNumber = myNumber - dec; var formattedNumber = ("0" +

Is there a way to format a decimal as following: 100 -> "100" 100.1 -> "100.10" If it is a round number, omit the decimal part. Otherwise format with two decimal places. extraneon I doubt it. The problem is that 100 is never 100 if it's a float, it's normally 99.9999999999 or 100.0000001 or something like that. If you do want to format it that way, you have to define an epsilon, that is, a maximum distance from an integer number, and use integer formatting if the difference is smaller, and a float otherwise. Something like this would do the trick: public String formatDecimal(float number) {