MatLab doesn’t have a ternary operator, or any other syntactic sugar for one-line if-statements. But if your if-statement is really simple, you could just write it in one line anyway: It’s not as simple as ternary operator, but still better than writing it in 5 lines of code.
string must be changed to String. By writing int score you’re trying to declare a new variable that already exists, which you declared before already. Just remove the int part and you will get the assignment you want.
Instead of COALESCE(a.addressid,0) AS addressexists, use CASE: or the simpler: This works because TRUE is displayed as 1 in MySQL and FALSE as 0.
I tried the following code different ways, like by taking out the while or the if, but when I put both together (if and while), I always get the error at the end… ERROR: FIXED by changing how I declared the variable “a” to: *Notice that here, the significant change is to use VARCHAR2 instead … Read more
It’s almost always advisable to not use scriptlets in your JSP. They’re considered bad form. Instead, try using JSTL (JSP Standard Tag Library) combined with EL (Expression Language) to run the conditional logic you’re trying to do. As an added benefit, JSTL also includes other important features like looping. Instead of: Use: Also, unless you plan on using response.jsp … Read more
There are several errors in your code. And you should use a cond when dealing with multiple conditions (think of it as a series of IF/ELSE IF/…/ELSE statements). Be aware that the expression (and (> x 1) (= x 1)) will never be true, as x is either greater than or equal to 1, both … Read more
You should convert your string to a number, if you know for sure that it should be a number, and if there is no reason for it to be a string. Here’s how to do a comparison for a range: Notice the and. Most programming languages don’t expand the form x < y < z … Read more
Your logic is slightly off. The second || should be &&: You can see why your original line fails by trying out a sample value. Let’s say $action is “delete”. Here’s how the condition reduces down step by step: Oops! The condition just succeeded and printed “error”, but it was supposed to fail. In fact, … Read more
This style of initialisation, using braces: was introduced to the language in 2011. Older compilers don’t support it; some newer ones (like yours) only support it if you tell them; for your compiler: However, this form of initialisation still isn’t valid for arrays created with new. Since it’s small and only used locally, you could … Read more