Syntax - Revision history

Laura: /* Fixed point numbers */

2014-05-05T14:33:10Z

Fixed point numbers

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	Fixed-point numbers are numbers with a decimal point in a fixed position.		Fixed-point numbers are numbers with a decimal point in a fixed position.

	"Floating point form-spec" represents a format specification from the following group: D, S, or L. These format specifications are fast, but non-portable. See [[~~File I/O~~]] for more information.		"Floating point form-spec" represents a format specification from the following group: D, S, or L. These format specifications are fast, but non-portable. See [[Format Specifications]] for more information.

	Floating-point numbers are numbers which allow the decimal point to "float" to any position. The Business Rules syntax is nEm, where n is a numeric constant indicating the sign and significant digits in the number, E represents base 10, and m is a signed integer representing the power to which 10 is raised.		Floating-point numbers are numbers which allow the decimal point to "float" to any position. The Business Rules syntax is nEm, where n is a numeric constant indicating the sign and significant digits in the number, E represents base 10, and m is a signed integer representing the power to which 10 is raised.

Laura: /* Form-Spec */

2014-04-29T17:02:29Z

Form-Spec

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	A "var-name" or "Variable Name" may be either numeric or string. It may be a subscripted or un-subscripted variable, or an array name preceded by MAT. Var-name items are used mainly in various types of input statements to assign values to variables. They typically occur in lists separated by commas.		A "var-name" or "Variable Name" may be either numeric or string. It may be a subscripted or un-subscripted variable, or an array name preceded by MAT. Var-name items are used mainly in various types of input statements to assign values to variables. They typically occur in lists separated by commas.

	====Form-Spec====		====String Form Spec====
	~~The "string form-spec" parameter should be replaced with a string format specification from the following group~~: C, CC, CR, CL, CU, G, GL, GU, V, VL, VU. The specifications that are applicable for a given statement are identified in the parameters text for that statement. See [[Format specifications]] for details.		{{:String Form Spec}}

	~~The CL, CU, GL, GU, VL, and VU specifications are valid only in full screen processing statements (PRINT FIELDS, INPUT FIELDS, and RINPUT FIELD); they cannot be used in either type of FORM statement.~~

	====String Expression====		====String Expression====

Laura: /* Num Form Spec */

2014-04-29T16:58:56Z

Num Form Spec

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	{{:Numeric Variable}}		{{:Numeric Variable}}

	====~~Num~~ Form Spec====		====Numeric Form Spec====
	~~The "num~~ form-spec" parameter should be replaced with a numeric format specification from the following group: G, GZ, N, or NZ. The specifications, which are applicable for a given statement, are identified in the parameters text for that statement. See [[File I/O]] chapter for information about individual format specifications.		{{:Numeric form spec}}

	====Outin====		====Outin====

Laura: /* Internal Form Spec */

2014-04-29T16:48:11Z

Internal Form Spec

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	====Internal Form Spec====		====Internal Form Spec====
	~~The "internal~~ form-spec~~" parameter should be replaced with a format specification from the following group: B, BL, BH, PD, ZD. See [[File I/O]] for information about individual format specifications.~~		{{:Internal form spec}}

	====Key Length====		====Key Length====

Laura: /* String Expression */

2014-04-29T15:29:02Z

String Expression

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	====String Expression====		====String Expression====
	~~The "~~string-expr" parameter represents one of several kinds of string elements, including string system functions, string user-defined functions, string constants, and string variables. See [[String Expression]] for more information about string constants and string variables. See [[Functions]] for more information about string system functions. See [[DEF]] statement discussion for more information about user-defined functions.		{{:string expression}}

	In addition to the four elements listed above, string expressions may utilize substring operators (to specify that only a portion of the string be used) and the concatenation operator (to specify that multiple string expressions be combined together). See [[Substring]] and [[Concatenation]] for more information.

	====Helpstring====		====Helpstring====

Laura: /* Numeric Expression */

2014-04-29T15:25:28Z

Numeric Expression

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	====Numeric Expression====		====Numeric Expression====
	~~The "num-expr" or "~~numeric expression" parameter represents one of five kinds of numeric elements: conditional expressions, numeric constants, numeric variables, numeric system functions, and numeric user-defined functions. See each definition in this section for more information about conditional expressions, numeric constants and numeric variables. See [[Functions]] for more information about numeric system functions. See the [[DEF]] statement discussion for more information about user-defined functions.		{{:numeric expression}}

	====Numeric Variable====		====Numeric Variable====

Laura: /* Numeric Variable */

2014-04-29T15:20:31Z

Numeric Variable

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	====Numeric Variable====		====Numeric Variable====
	"Num-var" or "numeric variable" is a name that a programmer assigns to a storage location in the computer's memory; it is used for storing a number. Variables are created by being referenced in expressions or by being specified in the [[DIM]] statement. When used in numeric expressions, numeric variables can be either subscripted or un-subscripted. When specified in syntax diagrams in this book, however, num-var must be a simple (i.e., un-subscripted) variable name -except when stated otherwise in the "parameters" section for the specific statement.		{{:Numeric Variable}}

	~~A numeric variable name can be 1-30 alphanumeric characters and underscores, the first of which must be a letter. Examples of simple numeric variable names include A5, TOTAL, RATE, and EMPLRATE.~~

	The same character sequence may be used as a name for both a variable (scalar) and an array. By adding a $ on the end, the same character sequence may be used for a string variable and a string array. Thus A, MAT A, A$, and MAT A$ all may co-exist in the same program.

	Certain words are reserved by Business Rules, and cannot be used as variable names. Note that all words starting with the letters "FN" are reserved, as they are considered user-defined function names. See also [[Reserved Words]].

	====Num Form Spec====		====Num Form Spec====

Laura: /* String Constant */

2014-04-29T15:13:38Z

String Constant

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	====String Constant====		====String Constant====
	~~A "string constant" is a series of characters enclosed in quotation marks. Before version 4.2, each constant was limited to 250 characters. Version 4.3 and following allow up to 99,999,999 characters.~~		{{:String Constant}}

	Quotation marks are used as delimiters in string constants. They signal the beginning and end of a string. You may use either single or double quotation marks. If the enclosed string contains one kind of quotation mark, however, you must either use the other kind as a delimiter or express the inner quotation mark as a pair. Examples of string constants are:~~<br>~~

	~~"Montana"~~
	~~'Montana'~~
	~~'The "Big Sky" Country'~~
	~~"The ""Treasure"" State"~~

	~~Note that in a "LIST" command single quotes represent case insensitive searching while double quotes represent case sensitive matching.~~

	===Quote Processing===		===Quote Processing===

Laura: /* Line Ref */

2014-04-29T15:05:19Z

Line Ref

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	====Line Ref====		====Line Ref====
	~~The "~~line-ref~~" parameter indicates that you can specify either a line number or a line label as a parameter.~~		{{:line ref}}

	====Numeric Array====		====Numeric Array====

Laura: /* Parts Of A Business Rules Statement */

2014-04-18T18:49:05Z

Parts Of A Business Rules Statement

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	{{:Comment}}		{{:Comment}}

			====Uppercase VS Lowercase Letters====
			Throughout this reference material, uppercase letters are generally used to denote the names of commands, statements, functions and other specifications. Uppercase is also used with the names of most files or programs except where the file or program being referred to is exclusively used with the Unix or Linux operating system. Regardless of your operating system, Business Rules accepts both uppercase and lowercase letters as identical except when they are used in a literal string. It defaults to displaying all but literal strings in uppercase (see the BRConfig.sys [[STYLE]] specification to change this default).

	==Syntax Explanation==		==Syntax Explanation==