- Language Reference
- Starting and Quitting Yorick
- Getting Help
- Error Recovery
- Array Data Types
- Constants
- Defining Variables
- Arithmetic and Comparison Operators
- Logical Operators
- Creating Arrays
- Indexing Arrays
- Array Conformability Rules
- Calling Functions
- Defining Functions
- Variable Scope
- Returning from Functions
- Compound Statements
- Conditional Execution
- Loops
- Function Reference
- I/O Reference
Yorick Language Reference
Logical Operators
Yorick supports C-style logical AND and OR operators. Unlike the arithmetic and comparison operators, these take only scalar operands and return a scalar int result. Their precedence is between | and =.
The right operand is not evaluated at all if the value of the left operand decides the result value; hence the left operand may be used to determine whether the evaluation of the right operand would lead to an error.
&& logical and (scalar int result)
|| logical or (scalar int result)
The logical NOT operator takes an array or a scalar operand, returning int 1 if the operand was zero, 0 otherwise. Its precedence is above ^.
! logical not (int result)
The ternary operator selects one of two values based on the value of a scalar condition:
condition ? true_expr : false_expr
Its precedence is low, and it must be parenthesized in a function argument list or an array index list to prevent confusion with the : in the index range syntax. Like && and ||, the expression which is rejected is not evaluated at all.