conditional-operator

I've got quite big trouble, because i need to anathematise from styling some input types. I had something like: .registration_form_right input:not([type="radio") { //Nah. } But i don't want to style checkboxes too. I've tried: .registration_form_right input:not([type="radio" && type="checkbox"]) .registration_form_right input:not([type="radio" && "checkbox"]) .registration_form_right input:not([type="radio") && .registration_form_right input:not(type="checkbox"]) How to use && ? And I'll need to use || soon, and I think that usage will be same. Update: I still don't know how to use || and &&

I'm a bit puzzled about the conditional operator. Consider the following two lines: Float f1 = false? 1.0f: null; Float f2 = false? 1.0f: false? 1.0f: null; Why does f1 become null and the second statement throws a NullPointerException? Langspec-3.0 para 15.25 sais: Otherwise, the second and third operands are of types S1 and S2 respectively. Let T1 be the type that results from applying boxing conversion to S1, and let T2 be the type that results from applying boxing conversion to S2. The type of the conditional expression is the result of applying capture conversion (§5.1.10) to lub(T1, T2)

How can I use an inline if statement in JavaScript? Is there an inline else statement too? Something like this: var a = 2; var b = 3; if(a < b) { // do something } MattW You don't necessarily need jQuery. JavaScript alone will do this. var a = 2; var b = 3; var c = ((a < b) ? 'minor' : 'major'); The c variable will be minor if the value is true , and major if the value is false . This is known as a Conditional (ternary) Operator. https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Conditional_Operator There is a ternary operator, like this: var c = (a < b) ? "a is less than

Is there a way to do something like this int a = (b == 5) ? c : d; using Bash? ghostdog74 ternary operator ? : is just short form of if/else case "$b" in 5) a=$c ;; *) a=$d ;; esac Or [[ $b = 5 ]] && a="$c" || a="$d" Code: a=$([ "$b" == 5 ] && echo "$c" || echo "$d") If the condition is merely checking if a variable is set, there's even a shorter form: a=${VAR:-20} will assign to a the value of VAR if VAR is set, otherwise it will assign it the default value 20 -- this can also be a result of an expression. As alex notes in the comment, this approach is technically called "Parameter Expansion"

While playing around with new concepts, I came across the Ternary Operator and it's beauty. After playing with it for a while, I decided to test its limits. However, my fun was ended quickly when I couldn't get a certain line of code to compile. int a = 5; int b = 10; a == b ? doThis() : doThat() private void doThis() { MessageBox.Show("Did this"); } private void doThat() { MessageBox.Show("Did that"); } This line gives me two errors: Error 1 Only assignment, call, increment, decrement, and new object expressions can be used as a statement Error 2 Type of conditional expression cannot be

Generally, when using the conditional operator, here's the syntax: int x = 6; int y = x == 6 ? 5 : 9; Nothing fancy, pretty straight forward. Now, let's try to use this when assigning a Lambda to a Func type. Let me explain: Func<Order, bool> predicate = id == null ? p => p.EmployeeID == null : p => p.EmployeeID == id; That's the same syntax, and should work? Right? For some reason that doesn't. The compiler gives this nice cryptic message: Error 1 Type of conditional expression cannot be determined because there is no implicit conversion between 'lambda expression' and 'lambda expression' I