If the expression is false, the system returns TRUE. Evaluates two expressions and returns a value of TRUE if both expressions are true. Evaluates two expressions and returns a TRUE if either or both of the expressions is true.
Indicates that the value of the first string starts with the value of the second string. The order of the operands affects this operation. Indicates that the value of the first string does not start with the value of the second string. This operator groups together expressions or statements. Service Manager follows the standard order of operations: operators inside the parentheses are evaluated first.
Parentheses themselves are evaluated from left to right. Send Help Center feedback. To open the configured email client on this computer, open an email window. Otherwise, copy the information below to a web mail client, and send this email to ovdoc-ITSM hpe.
Home Release notes What's new in Service Manager 9. All Files. Searching the Help To search for information in the Help, type a word or phrase in the Search box. You will also find its grammatical variations, such as "cats". A phrase. The result data type of an integer operation depends on the data types of the operands.
In general, Visual Basic uses the following policies for determining the result data type:. If both operands of a binary operator have the same data type, the result has that data type.
An exception is Boolean , which is forced to Short. If an unsigned operand participates with a signed operand, the result has a signed type with at least as large a range as either operand. The result data type is not always large enough to hold all possible values resulting from the operation. An OverflowException exception can occur if the value is too large for the result data type.
Visual Basic treats each bit-shift operator as a unary operator on its left operand the bit pattern to be shifted. If the left operand is Decimal , Single , Double , or String , Visual Basic attempts to convert it to Long before the operation, and the result data type is Long.
The right operand the number of bit positions to shift must be Integer or a type that widens to Integer. The result data type of a bitwise logical operation depends on the data types of the operands.
Note that AndAlso and OrElse are defined only for Boolean , and Visual Basic converts each operand as necessary to Boolean before performing the operation. If a numeric type is compared with a String , Visual Basic attempts to convert the String to Double before the operation.
A Char or Date operand can be compared only with another operand of the same data type. The result data type is always Boolean. If the operand is Decimal , Single , Double , or String , Visual Basic attempts to convert it to Long before the operation, and the result data type is Long. The following table shows the result data types for the bitwise And , Or , and Xor operators. If an operand is Decimal , Single , Double , or String , Visual Basic attempts to convert it to Long before the operation, and the result data type is the same as if that operand had already been Long.
Visual Basic converts each operand as necessary to String before the operation, and the result data type is always String. As with all logical and relational operators in D, operands are true if they have a non-zero integer value and false if they have a zero integer value. D provides the following binary operators for manipulating individual bits inside of integer operands.
The binary operator is used to set bits in an integer operand. The shift operators are used to move bits left or right in a given integer operand. Shifting left fills empty bit positions on the right-hand side of the result with zeroes.
Shifting right using an unsigned integer operand fills empty bit positions on the left-hand side of the result with zeroes. Shifting right using a signed integer operand fills empty bit positions on the left-hand side with the value of the sign bit, also known as an arithmetic shift operation.
Shifting an integer value by a negative number of bits or by a number of bits larger than the number of bits in the left-hand operand itself produces an undefined result. The D compiler will produce an error message if the compiler can detect this condition when you compile your D program. D provides the following binary assignment operators for modifying D variables. You can only modify D variables and arrays. Kernel data objects and constants may not be modified using the D assignment operators.
These assignment operators obey the same rules for operand types as the binary forms described earlier. The result of any assignment operator is an expression equal to the new value of the left-hand expression.
You can use the assignment operators or any of the operators described so far in combination to form expressions of arbitrary complexity. You can use parentheses to group terms in complex expressions. These operators can only be applied to variables, and may be applied either before or after the variable name. If the operator appears before the variable name, the variable is first modified and then the resulting expression is equal to the new value of the variable.
For example, the following two expressions produce identical results:. If the operator appears after the variable name, then the variable is modified after its current value is returned for use in the expression.
You can use the increment and decrement operators to create new variables without declaring them. The increment and decrement operators can be applied to integer or pointer variables.
When applied to integer variables, the operators increment or decrement the corresponding value by one. When applied to pointer variables, the operators increment or decrement the pointer address by the size of the data type referenced by the pointer.
Pointers and pointer arithmetic in D are discussed in Pointers and Arrays. Although D does not provide support for if-then-else constructs, it does provide support for simple conditional expressions using the? These operators enable a triplet of expressions to be associated where the first expression is used to conditionally evaluate one of the other two. For example, the following D statement could be used to set a variable x to one of two strings depending on the value of i :.
If the first expression is true, the second expression is evaluated and the? If the first expression is false, the third expression is evaluated and the? As with any D operator, you can use multiple?
For example, the following expression would take a char variable c containing one of the characters , a-z, or A-Z and return the value of this character when interpreted as a digit in a hexadecimal base 16 integer:. The first expression used with? The second and third expressions may be of any compatible types. You may not construct a conditional expression where, for example, one path returns a string and another path returns an integer.
The second and third expressions also may not invoke a tracing function such as trace or printf. If you want to conditionally trace data, use a predicate instead, as discussed in Introduction. When expressions are constructed using operands of different but compatible types, type conversions are performed in order to determine the type of the resulting expression. These rules are sometimes referred to as the usual arithmetic conversions.
A simple way to describe the conversion rules is as follows: each integer type is ranked in the order char, short, int, long, long long , with the corresponding unsigned types assigned a rank above its signed equivalent but below the next integer type.
If a conversion is required, the operand of lower rank is first promoted to the type of higher rank. Promotion does not actually change the value of the operand: it simply extends the value to a larger container according to its sign.
If an unsigned operand is promoted, the unused high-order bits of the resulting integer are filled with zeroes.
If a signed operand is promoted, the unused high-order bits are filled by performing sign extension. If a signed type is converted to an unsigned type, the signed type is first sign-extended and then assigned the new unsigned type determined by the conversion. Integers and other types can also be explicitly cast from one type to another. In D, pointers and integers can be cast to any integer or pointer types, but not to other types. Rules for casting and promoting strings and character arrays are discussed in Strings.
An integer or pointer cast is formed using an expression such as:.
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