I've seen this format used in JavaScript code, but can't find a good source for the meaning. Edit for a follow-up: Thanks for all the quick answers! I figured it was something like that. Now, for bonus points: can you use (var1 ? var2) to do the same thing as if (var1) { var2 } ? ...
I actually have an equation to make on visual basic. An exemple of it (12 = 12) AND (12>1) true and true the answer would be TRUE But for both comparison operators i must create a combo box to insert <, >, =, <=, >=, <> My problem is my program wont function because I don't know which variable to use for those... could anyo...
As the title says: do i need to override the == operator? how about the .Equals() method? Anything i'm missing? ...
(a && b) has the same value as (a & b), but with && the expression b is not executed if a is false. In Java there is also an operator &=. a &= b is the same as a = a & b. Question: Why isn't there an operator &&=, at least in Java. Is there some reason why I would not make sense to have it, or is it simply that no one cares or needs it...
I read that the ^ operator is the logical xor operator in c#, but i also thought it was the "power of" operator. Can someone clear this up for me? ...
Hi everyone, I'm getting this error when compiling my JRXML file in iReport 3.1.2: com.jaspersoft.ireport.designer.errorhandler.ProblemItem@f1cdfb The operator > is undefined for the argument type(s) java.lang.Integer, java.lang.Integer net.sf.jasperreports.engine.design.JRDesignExpression@eb40fe The only place in my entire report wh...
Is it possible to make a custom operator so you can do things like this? if ("Hello, world!" contains "Hello") ... Note: this is a separate question from "Is it a good idea to..." ;) ...
Hi, is it possible to define multiple output operators for an enum? I want to use this std::ostream& operator<< (std::ostream& os, my_enum e); operator to (1) print a human readable text and to (2) convert it to some code for storing in a database. Thanks ...
While implementing an == operator, I have the feeling that I am missing some essential points. Hence, I am searching some best practices around that. Here are some related questions I am thinking about: How to cleanly handle the reference comparison? Should it be implemented through a IEquatable<T>-like interface? Or overriding object...
Anyone can "declare" ones own operators in C.... that is if one is a C compiler guru and has the source code to the C compiler! ;-) Further questions to puzzle: How are these operations done in C99? gcc? ... And why were /\ & \/ dropped? Which types were the /\ and \/ operators valid for? Googling for "/\ \/" naturally returns nothi...
I was wondering if there was an efficient way to perform a shift right on an 8 bit binary value using only ALU Operators (NOT, OR, AND, XOR, ADD, SUB) Example: input: 00110101 output: 10011010 I have been able to implement a shift left by just adding the 8 bit binary value with itself since a shift left is equivalent to multiplying...
Just briefly, why are the following three lines not identical in their impact? if @controller.controller_name == "projects" || @controller.controller_name == "parts" if @controller.controller_name == ("projects" || "parts") if @controller.controller_name == "projects" || "parts" The first gives me the result I want, but as there's a...
double ABC = - UTIL_COMMON.fnChkDouble(lStr); Above statement, is it valid or not? Thanks ...
lets put a simple example: struct some_struct { std::string str; int a, b, c; } some_struct abc, abc_copy; abc.str = "some text"; abc.a = 1; abc.b = 2; abc.c = 3; abc_copy = abc; then abc_copy is an exact copy of abc.. how is it possible without defining the = operator? (this took me by surprise when working on some code..) ...
Not using operators makes my code obscure. (aNumber / aNother) * count is better than aNumber.divideBy(aNother).times(count) After 6 months of not writing a single comment I had to write a comment to the simple operation above. Usually I refactor until I don't need comment. And this made me realize that it is easier to read and pe...
I think the subject says it all. I always call it the "arrow operator", but I'm sure it has an official name. I quickly skimmed the C++ standard and didn't see it mentioned by name. ...
When you were a kid, did you ever ask your parents how to spell something and they told you to go look it up? My first impression was always, "well if could look it up I wouldnt need help spelling it". (yeah yeah I know phonetics) ...anyway, I was just looking at some code and I found an example like: txtbx.CharacterCasing = (checkb...
Is there such a thing? First time I encountered a practical need for it, but I don't see one listed in stroustrup. I intend to write: // Detect when exactly one of A,B is equal to five. return (A==5) ^^ (B==5); But there is no ^^ operator. Can I use bitwise ^ here and get the right answer (regardless of machine representation of true ...
Why is this example of code behaving differently in c++ and C#. [C++ Example] int arr[2]; int index = 0; arr[index] = ++index; The result of which will be arr[1] = 1; [C# Example] int[] arr = new int[2]; int index = 0; arr[index] = ++index; The result of which will be arr[0] = 1; I find this very strange. Surely there must be so...
I'm interested in how one would go in getting this to work : me = "this is a string" class << me alias :old<< :<< def <<(text) old<<(text) puts "appended #{text}" end end I'd like that when something gets appended to the me variable, the object will use the redefined method. If I try to run this, I get syntax error, une...