a number, variable, or a sum, difference, product, or quotient of numbers and/or variables involving any power of the variable or number; examples: 16 + 4, 5(3 + 6), 3x + 4 or 5 or 5Y - 3/X, 7
A sequence of tokens that can be evaluated.
A phrase that G2 evaluates to produce a value or a reference to an item.
Definition of a symbol. Either literal or a calculation.
A piece of code that are evaluated to produce a numeric result, such as 0 or 1. Some expressions that involve mathematical operations can produce other results.
A formula that calculates a value. You can use expressions in forms, reports, tables, queries, macros and modules.
A text string containing commands in the TDI language. All interfaces to MDSplus data are based on the evaluation of expressions
NCL: Any sequence of NCL operators and operands that results in the computation of a value. In particular, any literal value is an expression and any variable is an expression. Also, arrays are expressions as well as functions. Operators applied to expressions are expressions.
A mathematical symbol, or combination of symbols, representing a value, or relation. Example:2+2=4
A group of mathematical symbols (number, operation signs, variables, grouping symbols) that represents a number (or can represent a number if values are assigned to any variables it contains).
a mathematical statement involving variables written in words or symbols, e.g. length × width, a × b (or ab).
An expression is made up of operators and operands. The operators represent what is going to be done, and the operands represent to what it is going to be done. If there is more than one operation in an expression, then it is a compound expression. This is a software concept, dealing with programming. See C++.
An ·expression· is a string that looks like XSLT attribute value templates (AVT) : within an ·expression· , each substring surrounded by curly braces ({}) stands for an XPath expression. The differences with XSLT AVT are : An ·expression· may appear in attributes (like in XSLT) but also inside textual content (unlike XSLT). The result of evaluating an ·expression· is not converted to a string. An ·expression· that consists of a single XPath expression surrounded by curly braces returns an object.
A combination of variables, literals, and operators that evaluates to a single value.
A valid combination of data object names, language operators, and constant numeric values. Every expression is evaluated and reduced to a single value.
A series of operand s and (optionally) operator s and parentheses that forms either a data reference or a computation. See also constant expression, initialization expression, and specification expression.
a group of symbols that make a mathematical statement
a group of words that form a constituent of a sentence and are considered as a single unit; "I concluded from his awkward constructions that he was a foreigner"
a calculation that might include any combination of numbers, variables, strings, or constants to get some result
a character, a symbol, a word or a combination of those, usually from performing an operation or an assignment
a chunk of VBScript syntax in the form of a calculation that uses operators to combine numbers Microsoft VBScript Professional Projects Email a friend about this book
a code snippet that yields a value
a combination of column names and operators that evaluate to a single value
a combination of constants or variables that is used to denote computations
a combination of constants, variables, and operators that are used to denote computations
a combination of data fields, operators, values, and/or procedures destined to produce a new value
a combination of identifiers, operators, and values that produces a result
a combination of literals, operators, variable names, and parentheses used to calculate a value
a combination of literals, traversals and filters, variable references and function calls
a combination of number(s), variable(s) and/or mathematical operator(s)
a combination of one or more constants, literals, functions, column identifiers and/or variables, separated by operators, that returns a single value
a combination of one or more elements that evaluate to single Object value
a combination of one or more operands, zero or more operators, and zero or more pairs of parentheses
a combination of one or more operators and operands that usually perform a calculation
a combination of one or more values and operators that evaluate to a value
a combination of one or more values , operators , and SQL functions that evaluates to a value
a combination of operands and operators
a combination of operators and arguments that create a result
a combination of operators and arguments that evaluates to a result
a combination of symbols, constants, algebraic operators, and parentheses
a combination of terms and operators which, when evaluated, yield an arithmetic or logical result
a combination of values and signs that allow you to get a new value to display in a control
a combination of values and symbols used to produce a new value
a construction that returns a value
a construct that combines operands with operators to produce a result that is a function of the values of the operands and the semantic meaning of the operators
a construct that evaluates to a value
a finite sequence of atomic symbols
a formula that calculates a single value
a formula that can be evaluated to give a result
a formula that defines the computation of a value by the application of operators
a formula that defines the computation or retrieval of a value
a formula where every variable and every intermediate result can serve only once as an operand
a function call or a symbol
a group of literal and variables which are organized in a structured format using operators
a group of symbols that represent a value
a legal value or a range of legal values specified by the starting and ending values seperated by a hyphen (-)
a line of program code that can be reduced to a value or that assigns a value to a variable or constant
a mathematical construct that combines values and mathematical operators
a mathematical phrase that uses numbers, variables, and/or operations
a math- or string-related set of variables, literals, and control values that combine with math- and string-related operators to produce a resulting value
a meaningfulcollection of numbers variables and signs positive or negativeof operations that must make mathematical and logical sense
an algebraic formula that is converted to a string or a number
an arbitrarily complex combination of variables, constants, literals, operators, and function calls
an arithmetic combination of one or more variables, constants, or functions
an atom if it evaluates to nil, true, an integer, a float, a string, a symbol or a primitive
an atom or list that has an operator in the first item
an indication or specification of a value
a Node object, there is a hierarchy of different Node s that represent literals, symbols, binary and unary operators
an operation plus some number of arguments
a "package" of values and operations which specifies some value
a part of a statement that uses data and operators to return a value
a phrase in the language (say JavaScript ) that can be evaluated
a "phrase" of JavaScript that a JavaScript interpreter can evaluate to produce a value
a phrase of Javascript that can be evaluated to produce a value
a piece of a program that gives a value when it is executed by the computer
a piece of code that, when executed, produces a value
a sequence of one or more terms separated by operators
a sequence of operators and operands -- constructed according to the Java language's syntax -- that evaluates to a specific data type's single value
a sequence of operators and operands that specifies a computation
a sequence of operators and operands that specifies computation of a value, or that designates an object or a function, or that generates side effects, or that performs a combination thereof
a sequence of symbols that represent a value
a sequence of symbols that represents a value
a series of operators and quantities to be operated on (operands) that returns a result
a series of values and operations which, when performed, result in a value
a series of variables, operators, and method calls (constructed according to the syntax of the language) that evaluates to a single value
a series of variables, operators, and method calls that result in a single value
a set of named variables, constants or functions which eventually resolves to a single value
a snippet of code that can be evaluated to produce a value
a specific combination of operators and operands, which evaluates to a particular result
a statement that performs mathematical operations, assigns values to variables, and/or makes comparisons between operands
a string of symbols and terms, possibly empty
a string of variables and constants separated by operators
a syntactic construction that has a value
a syntactic unit that occurs within a statement and denotes a value
a technique of using such values to fill out a field
a term, followed by zero or more repetitions of the combination of an adding operator and a term
a tree of operators that calculates the value of an output field using the fields of a input record
a valid series of constants, variables, and functions, connected by operators
a written mathematical formula that details the values, operations and functions as well as the order in which the operations and functions are performed for the formula to be solved
Any combination of operators, constants, literal values, functions, names of columns, controls, and properties that result in a single value. In a query, you can use expressions anywhere that you can use a column name. In the Query Designer, you can use expressions as settings for many action and properties arguments, to set criteria or define calculated fields in queries, and to set conditions in macros. In the Database Designer, you can use expressions to define check constraints. field A location in a record where data is stored; used in some database systems to mean " column." Although the terms "field" and "column" have slightly different meanings in formal database theory, in most instances they are meant synonymously.
An XPath construct that can be evaluated to a string, number, Boolean, or set of nodes. Expressions are used in many contexts such as the select attribute of the xsl:templates element.
Any of hundreds of different variables a musician can control when playing a note, including dynamics and articulation
A PCRaster map or an operation resulting in a PCRaster map.
A mathematical phrase that can include operations, numerals, and variables. In algebraic terms: 2l + 3x; in numeric terms: 13.4 - 4.7.
The data types, operators, and macro functions associated with a flowdiagram object.
a series of fundamental elements making up a command statement that a compiler can use to produce a value. Expressions have one or more operands and, usually, one or more operators.
A variable, or any combination of numbers, variables, and symbols that represents a mathematical relationship (EXAMPLE: 24 x 2 + 5 or 4a – 9).
A term consisting of numbers and compound terms with evaluable functors.
without an equal sign, this has some mathematical meaning. The operations, and the rules for order of operations, tell you what is to happen.
An entity composed of values and operators that can be evaluated to produce a single value. For example i+3 and std::cin.get() are expressions but return std::cin.get(); is not because it has no value. However complete expressions that are not part of some larger statement are also statements (see statement).
as opposed to instruction, an expression produces a return value. For example, an expression can be used on the right-hand side of an assignment. The constant True is an expression. The constant is also an expression. The calculation i+1 is one too. Without being too dogmatic about it, good programming habits lead us not to allow side effects during the evaluation of expressions. See also the syntax diagram for an expression. [ edit
In Event Management, the relational expression between a resource variable and other elements (such as constants or the previous value of an instance of the variable) that, when true, generates an event. An example of an expression is X 10 where X represents the resource variable IBM.PSSP.aixos.PagSp.%totalfree (the percentage of total free paging space). When the expression is true, that is, when the total free paging space is observed to be less than 10%, the Event Management subsystem generates an event to notify the appropriate application.
Any valid combination of mathematical or logical variables, constants, strings, and operators that yields a single value.
In programming languages, a language construct for computing a value from one or more operands.
A combination of keywords, operators, variables, and constants that yield a string, number, or object. An expression can perform a calculation, manipulate characters, or test data.
A notation that represents a value: a primary appearing alone, or combinations of primaries and operators. An expression can be arithmetic, character, logical, or relational.
a symbolic representation of a quantity in terms of variables, numbers, and symbols. For example, 2 is an expression for the perimeter of a rectangle of length and width .
A formula, such as SALARY + COMMISSION, used to calculate a new value from existing values. An expression can be made up of column names, functions, operators, and constants. Formulas are found in commands or SQL statements.
a formula or set of descriptive logic
An expression defines the computation of a value.
mathematical a group of symbols representing numbers and operations. open a mathematical expression containing variables.
A constant, variable, or operands and operators combined. Used to set a value, perform a calculation, or set the pattern for a comparison (regular expressions).
A mathematical phrase that uses numbers, variables, and operation symbols to represent a value. F's
Something which can be evaluated to produce a value which can be stored or otherwise processed.
A sequence of operators and operands which may yield a single value.
A phrase in C language comprising variable names, constants, functions and operators that expresses a value. F-F-F
a collection of numbers, symbols, and/or operation signs that stands for a number.
(n.) a sequence of operands, operators and parantheses. It may be a variable constant function reference, or may represent a computation.
A sequence of characters that describes an object, which is the value of the expression. also message expression and block expression.
A mathematical or logical statement that a software program can evaluate to arrive at a variable value or TRUE/FALSE condition.
An expression is one or more operands connected by one or more operators. The operands can be either literal values, variables, or functions. For example, $foo is an expression. $foo + (34 * bar()) is also an expression. Expressions can be arbitrarily complex. See also Statement.
A representation of a value; for example, variables and constants that appear alone or in combination with operators are expressions.
A formula, evaluated when a Cisco CRA script executes, to determine the value of a variable.
A combination of field or variable names and arithmetic or other operators used to perform a calculation, manipulate characters, or test data. For example, =Date(), [Price]*[Quantity], and =[FirstName] & " " & [LastName] are expressions.
An SM expression is something that can appear on the right hand side of a SET command. More specifically, it is something that can appear as part of the right hand side of a SET command (this excludes implied do loops: SET x=1,10,2). Expressions may also appear in other contexts, such as in the ANGLE command, or in DEFINE name ( expression ). A formal definition of an expression is given by the YACC grammar in `control.y' as the non-terminal symbol expr.
A string that evaluates to a value of a particular type. For example, the expression "(7 + 5 3)" evaluates to a value of type number.
In a computer program, a combination of data objects linked by operators.
A construct that is executed for the values it returns and/or the side-effects that it performs.
A combination of constants, variables or array elements acted upon by logical, mathematical or relational operators that return a numeric value.
A meaningful collection of numbers, variables, and signs of operation.
A construct composed of operators and operands that represent the computation of a result of a particular type.
In JavaScript, expressions are phrases that the interpreter can evaluate. For example, x + 10 and x 10 are expressions since they can be evaluated, while x = 10 is simply a statement. In linguistical terms, JavaScript is made up of sentences, phrases, and words. The sentences are JavaScript statements, in which an entire action is expressed. The phrases are JavaScript expressions, in which the elements of the action can be created and put together to make a statement. The words are JavaScript operators, which are used to act upon the data passed to them.
A collection of quantities, variables and operations. It evaluates to a number, if specific values are plugged in for the variables. 2 + x, 3, and are all expressions.
An expression which uses symbols to represent numbers or abstract concepts for use in operations similar to arithmetic.
A validated series of variables, constants, and functions that can be connected by operating symbols to describe a desired computation.
Each part of any number sentence that combines numbers and operation signs (+,-,*, /) is an expression; a number sentence without an equals sign.
A variable or combination of variables, numbers, and operation symbols that represents a mathematical relationship. 6, 2 + 3, x, x + 4, and x + 2y are all expressions .
An expression is a combination of numbers, operators, grouping symbols (such as brackets and parentheses) and/or free variables and bound variables arranged in a meaningful way which can be evaluated. Bound variables are assigned values within the expression (they are for internal use) while free variables can take on values from outside the expression.
An expression in a programming language is a combination of values, variables, operators, and functions that are interpreted (evaluated) according to the particular rules of precedence and of association for a particular programming language, which computes and then produces (returns, in a stateful environment) another value. The expression is said to evaluate to that value. As in mathematics, the expression is (or can be said to have) its evaluated value; the expression is a representation of that value.