boolean-operations

问题 std::ifstream file_1(argv[1]); std::ifstream file_2(argv[2]); ... std::string dummy_1; std::string dummy_2; ... while(std::getline(file_1, dummy_1) || std::getline(file_2, dummy_2)) // the problem { ... } The condition behaves like the OR operator is evaluating the option on the right only if the file on the left reach the end (returning a FALSE) and it doesn't evaluate them at the same time. I know that the evaluation of a statement has nothing to do with the operator itself or with its own

问题 In C# there are various ways to do this C# Pass bitwise operator as parameter specifically the "Bitwise.Operator.OR" object, but can something like this be done in JavaScript? For example: function check(num1, num2, op) { return num1 op num2; //just an example of what the output should be like } check(1,2, >); //obviously this is a syntax error, but is there some kind of other object or bitwise operator of some kind I can plug into the place of ">" and change the source function somehow? 回答1:

问题 Do they have a reason for doing so? I mean, in the sum of minterms, you look for the terms with the output 1; I don't get why they call it "minterms." Why not maxterms because 1 is well bigger than 0? Is there a reason behind this that I don't know? Or should I just accept it without asking why? 回答1: The convention for calling these terms "minterms" and "maxterms" does not correspond to 1 being greater than 0. I think the best way to answer is with an example: Say that you have a circuit and

问题 I am a new programmer, so sorry if this is really basic. I have looked around for this website for an answer, I could find very similar questions, but none was what I needed. import java.util.Scanner; public class sortThreeIntegers { public static void main (String[] args) { Scanner input = new Scanner(System.in); Scanner input2 = new Scanner(System.in); Scanner input3 = new Scanner(System.in); System.out.println("Enter the first number: "); System.out.println("Enter the second number: ");

问题 I have a function in a model that can return either true or false . I use this function inside a view and first thing I discovered when I called it is {{ Setting::isDesktop() }} that it outputs 1 instead of true if I do that inside blade file. If I do dd({{ Setting::isDesktop() }}) then it will print true or false . Second thing that is giving me a problem is that, if the value is false then nothing is printed when doing this from blade file. I need something to be printed either 1/0 or true

问题 Newbie question. How to calculate the value of the formula A f B, where f - the binary function OR or AND? 回答1: There is a distinction between the conditional operators && and || and the boolean operators & and |. Mainly it is a difference of precendence (which operators get evaluated first) and also the && and || are 'escaping'. This means that is a sequence such as... cond1 && cond2 && cond3 If cond1 is false, neither cond2 or cond3 are evaluated as the code rightly assumes that no matter

问题 Its the same thing right? Or is there a slight difference? I just wanna make sure I'm not misunderstanding anything. 回答1: Boolean duals are generated by simply replacing ANDs with ORs and ORs with ANDs. The complements themselves are unaffected, where as the complement of an expression is the negation of the variables WITH the replacement of ANDs with ORs and vice versa. Consider: A+B Complement: A'B' Dual: AB 回答2: "The Dual of an identity is also an identity. This is called the Duality

问题 I'm working on an application, I need to be able to combine two overlapping arbitrary shapes as drawn by the user. This would be a Union operation on the two shapes. The resultant shape would be the silhouette of the two overlapping shapes. The shapes are stored as a sequence of points in a clockwise manner. Ideally I'd like an algorithm which will take two arrays of Points (x,y) and return a single array of the resultant shape. I've been reading Wikipedia on Boolean operations on polygons

问题 Does a Javascript library exist which can perform boolean operations on paths (bezier curves)? I know about Paper.js and Raphael.js, but both cannot perform these actions now. 回答1: Paper.js now has boolean operations in its core: https://github.com/paperjs/paper.js/blob/master/src/path/PathItem.Boolean.js And here you can see the operations in action: http://assets.paperjs.org/boolean/ 回答2: If you convert path to polygons (eg. using pathelement.getPointAtLength()), then you can use Javascript

问题 I'm doing an CTL exercise, I'm trying to check if the following formulas are equivalent or not. But I'm not sure if I'm doing right. EF (p or q) = EF(p) or EF(q) ? AF(p or q) = AF(p) or AF(q) ? A(p U ( A(q U r) )) = A(A(p U q) U r) ? Firt formula: Equivalent Second formula: Equivalent Third formula: Equivalent Is it right? If are wrong could you give me one of possible counter-examples in Kripke model? Thanks in advance. 回答1: I'll try to use the semantics of CTL defined here: Wikipedia about