It depends on the machine you’re targeting. On a machine that uses a 2’s complement representation for integers there’s no difference at bit-level between 0 and -0 (they have the same representation) If your machine used one’s complement, you definitely could 0000 0000 -> signed 0 1111 1111 -> signed −0 Obviously we’re talking about … Read more
If you read the help for vector (or numeric or logical or character or integer or double, ‘raw’ or complex etc ) then you will see that they all have a length (or length.out argument which defaults to 0 Therefore numeric() logical() character() integer() double() raw() complex() vector(‘numeric’) vector(‘character’) vector(‘integer’) vector(‘double’) vector(‘raw’) vector(‘complex’) All return … Read more
Unit identifiers are optional, but there is no noted performance increase (although you are saving two characters). CSS2 – From W3C CSS 2.1 Specification for Syntax and basic data types: The format of a length value (denoted by <length> in this specification) is a <number> (with or without a decimal point) immediately followed by a … Read more
memset(array, 0, sizeof(array[0][0]) * m * n); Where m and n are the width and height of the two-dimensional array (in your example, you have a square two-dimensional array, so m == n).
I like if ((item.Rate ?? 0) == 0) { } Update 1: You could also define an extension method like: public static bool IsNullOrValue(this double? value, double valueToCheck) { return (value??valueToCheck) == valueToCheck; } And use it like this: if(item.IsNullOrValue(0)){} // but you don’t get much from it
You can use a regular expression that matches zeroes at the beginning of the string: s = s.replace(/^0+/, ”);
It is safe to expect that the comparison will return true if and only if the double variable has a value of exactly 0.0 (which in your original code snippet is, of course, the case). This is consistent with the semantics of the == operator. a == b means “a is equal to b“. It … Read more
Looks like your depth variable is unset. This means that the expression [ $depth -eq $zero ] becomes [ -eq 0 ] after bash substitutes the values of the variables into the expression. The problem here is that the -eq operator is incorrectly used as an operator with only one argument (the zero), but it … Read more
You can use sprintf: http://php.net/manual/en/function.sprintf.php <?php $num = 4; $num_padded = sprintf(“%02d”, $num); echo $num_padded; // returns 04 ?> It will only add the zero if it’s less than the required number of characters. Edit: As pointed out by @FelipeAls: When working with numbers, you should use %d (rather than %s), especially when there is … Read more
Yes, 0 is an Octal literal in C++. As per the C++ Standard: 2.14.2 Integer literals [lex.icon] integer-literal: decimal-literal integer-suffixopt octal-literal integer-suffixopt hexadecimal-literal integer-suffixopt decimal-literal: nonzero-digit decimal-literal digit octal-literal: 0 <——————–<Here> octal-literal octal-digit