You are correct, in C it is tautologous. Both your particular ternary conditional and (1 > 0) are of type int. But it would matter in C++ though, in some curious corner cases (e.g. as parameters to overloaded functions), since your ternary conditional expression is of type int, whereas (1 > 0) is of type … Read more
?: is a form of the conditional operator which was previously available only as: expr ? val_if_true : val_if_false In 5.3 it’s possible to leave out the middle part, e.g. expr ?: val_if_false which is equivalent to: expr ? expr : val_if_false From the manual: Since PHP 5.3, it is possible to leave out the … Read more
This is the PHP ternary operator (also known as a conditional operator) – if first operand evaluates true, evaluate as second operand, else evaluate as third operand. Think of it as an “if” statement you can use in expressions. Can be very useful in making concise assignments that depend on some condition, e.g. $param = … Read more
For [1], you can’t: these operators are made to return a value, not perform operations. The expression a ? b : c evaluates to b if a is true and evaluates to c if a is false. The expression b ?? c evaluates to b if b is not null and evaluates to c if … Read more
No, you cannot do that. Instead try this: if(bool1 && bool2) voidFunc1();
Looking through the C# 5 Language Specification section 7.14: Conditional Operator we can see the following: If x has type X and y has type Y then If an implicit conversion (ยง6.1) exists from X to Y, but not from Y to X, then Y is the type of the conditional expression. If an implicit … Read more
From the Java 6 JLS: At run time, the first operand expression of the conditional expression is evaluated first; if necessary, unboxing conversion is performed on the result; the resulting boolean value is then used to choose either the second or the third operand expression: If the value of the first operand is true, then … Read more
Angular expressions do not support the ternary operator before 1.1.5, but it can be emulated like this: condition && (answer if true) || (answer if false) So in example, something like this would work: <div ng-repeater=”item in items”> <div>{{item.description}}</div> <div>{{isExists(item) && ‘available’ || ‘oh no, you don’t have it’}}</div> </div> UPDATE: Angular 1.1.5 added support … Read more
When you think about the type of the operands, the problem becomes more apparent: this.method != null ? this.method : this.constructor has as type the most specialized common type of both the operands, i.e. the most specialized type common to both this.method and this.constructor. In Java 7 this is java.lang.reflect.Member, however the Java 8 class … Read more
This is the ternary conditional operator, which can be used anywhere, not just the print statement. It’s sometimes just called “the ternary operator”, but it’s not the only ternary operator, just the most common one. Here’s a good example from Wikipedia demonstrating how it works: A traditional if-else construct in C, Java and JavaScript is … Read more