The operator precedence of C++ is the standard mathematical precedence, where % has the same precedence as /. So, the expression m = 605 / 10 + 45 % 7 + 29 % 11; would be evaluated as m = (605 / 10) + (45 % 7) + (29 % 11); Which would result in: … Read more
! means not. IsNullOrWhiteSpace is a static method of String which returns a boolean value, so the code is returning whether both ‘Code’ and ‘State’ have a value. solved What does this “!string” mean?
Supposing the modification of a affect the stack rather than a is only supported by a register : a = 11 is a simple write, and on a lot of CPU the CPU executes the next instruction(s) before the write in memory is finished (under condition of memory access(es) of course) a +=1 need first … Read more
Bitwise XOR assignment (^=) The bitwise XOR assignment operator (^=) uses the binary representation of both operands, does a bitwise XOR operation on them and assigns the result to the variable. Source: MDN 1 solved what does ^= mean in js [duplicate]
Unfortunately, that’s not how the || operator works. You’d have to write: fileheader[j] !== ‘GENE_NAME’ || fileheader[j] !== ‘logCPM’ // …etc The other option is creating an array and using indexOf: if ([‘GENE_NAME’, ‘logCPM’, ‘logFC’, ‘FOR’, ‘PValue’].indexOf(j) < 0) { } If you’re only worried about newer browsers, you may also be able to get … Read more
The unary ~ operator has higher precedence than == or =~ so this: string ==~ /^ABC/ is just a confusing way of writing: string == (~/^ABC/) But what does Regexp#~ do? The fine manual says: ~ rxp → integer or nil Match—Matches rxp against the contents of $_. Equivalent to rxp =~ $_. and $_ … Read more
The effect is as you write, but it’s achieved using a slightly different sequence: The post-increment has highest precedence, so it’s evaluated first. However, its return value (which is processed by further operators) is the value of iter before the increment. Dereference is evaluated next, returning pointer to which the non-incremented value of iter was … Read more
It means you’ve got a typo. It should be cout<<“v=”<<v.getInd(); the same as the line above. 0 solved No match for ‘operator
The key to answering this question is realization of how C treats integers that participate in logical operations: Zero is treated as FALSE All values other than zero are treated as TRUE Here are the truth tables for the three operators from your code snippet: !FALSE -> TRUE !TRUE -> FALSE FALSE || FALSE -> … Read more
In the form you provided there is evident difference in complexity: the first code uses 3 operators, then the second — just one. But OK, lets put this code of and assume you want to compare > (or <) and == (!=). If you have ever faced assembler while examing your programs (but i bet … Read more
The error message give you a big hint where to look: Undefined operator ‘+’ for input arguments of type ‘cell’. Error in gbp2/pts (line 36) ylist(z) = ylist(z) + arrayfun(@(coor) u(z, coor, mode, w, R, Psi),xlist(z).’,’uniformoutput’,false); From the documentation for arrayfun and the ‘UniformOutput’ option: Requests that the arrayfun function combine the outputs into cell … Read more
In Java, the test if (i==f && i.equals(f)) is nonsensical. Since i is an Integer and f is a Float, they will never be == (and, since they are incommensurate types, cannot legally be compared with ==). For reference types, the == operator evaluates to true only if the variables reference the same object, which … Read more
The “is” operator takes 2 operands and returns a boolean value representing the ability for the first operand to be cast into the second operand. For example: if(object1 is ClassA) //returns true if object1 is derived from ClassA or can be cast into ClassA. 5 solved What does the `is` operator do in C#?
Assuming the statement you’re testing is actually ‘How is the weather’ then your if statement is working as expected. Your checks are seeing if the statement contains ‘weather’ and ‘what’ OR contains the word ‘how’ (note the lower case). As your phrase doesn’t contain the word ‘what’ the first check (for the words ‘weather’ AND … Read more
I can already get the integers but I am having trouble with the operators since I don’t know what category they fall in They belongs to none of these. They are part of programming language and not data type. Data types and operators work along to perform some action like int a, b; int c … Read more