return statement in ternary operator c++
The second and third arguments to the ternary operator are expressions, not statements. return a is a statement
ternary
Python Ternary Operator Without else
Yes, you can do this: <condition> and myList.append(‘myString’) If <condition> is false, then short-circuiting will kick in and the right-hand side won’t be evaluated. If <condition> is true, then the right-hand side will be evaluated and the element will be appended. I’ll just point out that doing the above is quite non-pythonic, and it would … Read more
Java autoboxing and ternary operator madness
Ternary expressions, like any expression, have a type that is determined by the compiler. If the two sides of the ternary expression have what looks like different types, then the compiler will try and find a common base type using the least ambiguous of the two options. In your case, the -1 is least ambiguous, … Read more
Strange Java behaviour. Ternary operator
The behaviour is specified in JLS – Conditional Operator: If one of the second and third operands is of primitive type T, and the type of the other is the result of applying boxing conversion (ยง5.1.7) to T, then the type of the conditional expression is T. Emphasis mine. So, in the 2nd case: Float … Read more
NullPointerException through auto-boxing-behavior of Java ternary operator
According to JLS: – The type of a conditional expression is determined as follows: If the second and third operands have the same type (which may be the null type), then that is the type of the conditional expression. If one of the second and third operands is of primitive type T, and the type … Read more
Java Ternary without Assignment
Nope you cannot do that. The spec says so. The conditional operator has three operand expressions. ? appears between the first and second expressions, and : appears between the second and third expressions. The first expression must be of type boolean or Boolean, or a compile-time error occurs. It is a compile-time error for either … Read more
?: ternary conditional operator behaviour when leaving one expression empty
This is a GNU C extension (see ?: wikipedia entry), so for portability you should explicitly state the second operand. In the ‘true’ case, it is returning the result of the conditional. The following statements are almost equivalent: a = x ?: y; a = x ? x : y; The only difference is in … Read more
Ternary Operators Java
In this case, you don’t even need a ternary operator: cmdCse.setVisible(selection.toLowerCase().equals(“produkt”)); Or, cleaner: cmdCse.setVisible(selection.equalsIgnoreCase(“produkt”)); Your version: selection.toLowerCase().equals(“produkt”)? cmdCse.setVisible(true): cmdCse.setVisible(false); is semantically incorrect: ternary operator should represent alternative assignments, it’s not a full replacement for if statements. This is ok: double wow = x > y? Math.sqrt(y): x; because you are assigning either x or Math.sqrt(y) … Read more
Java: Ternary with no return. (For method calling)
No, you can’t. But what’s the point of this over an if-else statement? Are you really trying to save 7 characters? if (name.isChecked()) { name.setChecked(true); } else { name.setChecked(false); } or if you prefer bad style: if (name.isChecked()) name.setChecked(true); else name.setChecked(false); Never mind the fact that you can just do (in this case): name.setChecked(name.isChecked()); The … Read more
Write 1 line If statement using ternary operator in JAVa
I assume your actual code looks like this: if (preconditionflag.equals(“skip”)){ System.out.println(“Skipping this testcase due to earlier testcase failed”); flag = “skip”; } else { flag = “pass”; } If not, the answer to your question is already no, because you can’t return from a method in one part and not return from a method in … Read more