decimal

问题 In Objective C I have been using this code to format a value so that a value with zero decimals will be written without decimals and a value with decimals will be written with one decimal: CGFloat value = 1.5; return [NSString stringWithFormat:@"%.*f",(value != floor(value)),value]; //If value == 1.5 the output will be 1.5 //If value == 1.0 the output will be 1 I need to do the same thing for a double value in Java, I tried the following but that is not working: return String.format("%.*f",

问题 How to determine whether a variable is a decimal and it is less than 0.01 in PHP? If I write if($balance<0.01) Will a true value be returned if $balance is not a decimal at all? 回答1: use if( is_numeric($balance) && $balance < 0.01 ) http://php.net/manual/de/function.is-numeric.php 回答2: The value of $balance will be typecasted to whatever is needed for the comparison. In your case, any integer will do, e.g. a $balance of 1 , 1.1 or '1' will all evaluate to false , regardless of their initial

问题 I want to display an Emoji icon using it's decimal value, for example &#xe41e How can I display it in an UILabel ? Thanks! 回答1: Try this textLabel.text = @"\ue41e"; Instead of &#x, use \u . I hope this is the one you want. 来源： https://stackoverflow.com/questions/8700292/iphone-emoji-decimal-value-representation

问题 I'm trying to validate that a decimal in c# will fit into a db column decimal. The SqlDecimal object allows you to pass in a precision and scale as well as the decimal bits to the constructor. I know the size of the column and so before we write the data I check each input so I can produce business required output. In this case we are storing a percent, so the precision is 13 and the scale is 10 . I have a testing harness that I've condensed below into a unti test for SO. This sample is

问题 I'm trying to validate that a decimal in c# will fit into a db column decimal. The SqlDecimal object allows you to pass in a precision and scale as well as the decimal bits to the constructor. I know the size of the column and so before we write the data I check each input so I can produce business required output. In this case we are storing a percent, so the precision is 13 and the scale is 10 . I have a testing harness that I've condensed below into a unti test for SO. This sample is

问题 I have been searching for a method to convert a decimal MAC address into a hex one. So for example 170.187.204.0.17.34 to AA:BB:CC:00:11:22 . Credits goes to Convert HEX to Decimal value? w/ an example. I put my decimal value into columnA (starting A2) and the hexadecimal equivalent should go into columnB (starting B2). 回答1: With 170.187.204.0.17.34 in A1, apply Text to Columns with . as the delimiter. In A2 copied across to F2: =DEC2HEX(A1) in G2: =A2&":"&B2&":"&C2&":"&D2&":"&E2&":"&F2 Or,

问题 I was reading that you have to be careful with floating point comparisons and calculations in PHP. I'm not an expert at PHP so I thought I would ask the community what is the best way to do accurate decimal calculations in PHP. I'm developing a timecard application where it calculates all the time entered for the week. Anything over 40 hours is considered overtime. I then want to distribute that overtime back across each time entry based on the percentage that entry is of the total time.

问题 I'm trying to calculate the sum of an array of decimal values in PHP, but for some reason it keeps rounding to integers. for example: $oldArray = array(0.00,1000.11,988.92,978.22,964.01,953.07,948.82,917.26,902.56,913.21,904.08,898.86,892.79); $myVar = 0.0; for($k=1;$k<10;$k++) { $myVar += $oldArray[$k]; } print_r($myVar); $oldArray is actually populated with decimal values from an SQL query (the length of $oldarray is about several hundred, but I want the first 10. In the above example, I'm

问题 Say I have a number 0 that corresponds to the ASCII character a . How would I go about converting a number in the range 0 to 25 to letters in the alphabet? I have already tried adding 97 to the decimal value, but it just outputs the number+ 97 . typedef enum { a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z } set; void dispSet(set numbers[], int size_numbers) { int i; printf("[ "); for (i = 0; i < size_numbers-1; i++) { printf("%d, ", ((char) numbers[i])+97); }

问题 Say I have a number 0 that corresponds to the ASCII character a . How would I go about converting a number in the range 0 to 25 to letters in the alphabet? I have already tried adding 97 to the decimal value, but it just outputs the number+ 97 . typedef enum { a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z } set; void dispSet(set numbers[], int size_numbers) { int i; printf("[ "); for (i = 0; i < size_numbers-1; i++) { printf("%d, ", ((char) numbers[i])+97); }