Inspection

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These functions are used to "inspect" or "test" the results of an expression, generally for use in conjunction with Flow type functions.

 

 

 

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Function:Between        
Result-type:Boolean        
Arguments:eTest, eFirst, eLast        
Description:Returns TRUE if eTest is between eFirst and eLast, non-inclusive -- e.g. Between(2, 2, 3) would return False because 2 is not greater than 2. Arguments can be text, numbers, dates, or boolean (but must all be the same type)        

 

 

Function:Empty        
Result-type:Boolean        
Arguments:eExpression        
Description:Returns TRUE if the argument is an empty text string, 0 value, invalid date, or FALSE boolean value        

 

 

Function:FieldIsBlank        
Result-type:Boolean        
Arguments:rRecord, cFieldName        
Description:Returns 'T' if the specified field is designated as a 'blank' value (not set) -- this could be different than a '0' numeric value or FALSE boolean        

 

 

Function:FieldIsEnabled        
Result-type:Boolean        
Arguments:rRecord, cFieldName        
Description:Returns 'T' if the specified field is enabled for the table that the given record belongs to        

 

 

Function:IsAlpha        
Result-type:Boolean        
Arguments:cCharacter        
Description:Returns TRUE if the character is an alphabetic character (a-z or A-Z)        

 

 

Function:IsDigit        
Result-type:Boolean        
Arguments:cCharacter        
Description:Returns TRUE if the character is a digit (0-9)        

 

 

Function:IsLower        
Result-type:Boolean        
Arguments:cCharacter        
Description:Returns TRUE if the character is a lower-case alphabetic character (a-z)        

 

 

Function:IsUpper        
Result-type:Boolean        
Arguments:cCharacter        
Description:Returns TRUE if the character is an upper-case alphabetic character (A-Z)        

 

 

Function:Len        
Result-type:Numeric        
Arguments:cText        
Description:Returns the length of the text (number of characters)        

 

 

Function:Like        
Result-type:Boolean        
Arguments:cTextWild, cText        
Description:Returns TRUE if cText matches cTextWild, with '?' and '*' wild-card character support in cTextWild. Case sensitive.        

 

 

Function:LoopFindNth        
Result-type:Unknown        
Arguments:nStart, nEnd, nOccurrence, cPlaceholder, cQuotedExpression, cQuotedCondition [, cQuotedDefault]        
Description:Repeats execution of the quoted condition, replacing the placeholder text with the index numbers in the given start-end range, until the condition returns true nOccurrence times. Then it will return the results of the quoted expression evaluated for that index (or a NULL/error return if not found unless there's a default). For example, it could be used to return the value of the 3rd Charge transaction for a reservation        

 

 

Function:LoopFindNthIndex        
Result-type:Numeric        
Arguments:nStart, nEnd, nOccurrence, cPlaceholder, cQuotedCondition        
Description:Repeats execution of the quoted condition, replacing the placeholder text with the index numbers in the given start-end range, until the condition returns true nOccurrence times. Then it will return that index number (or nStart-1 if it passes the end). For example, it could be used to return the index number of the 3rd Charge transaction for a reservation        

 

 

Function:Occurs        
Result-type:Numeric        
Arguments:cText, cTextToFind        
Description:Returns the number of times cTextToFind occurs in cText        

 

 

Function:Sign        
Result-type:Numeric        
Arguments:nValue        
Description:Returns -1 if the value is less than 0, 1 if the value is greater than 0, or 0 if it's exactly 0        

 

 

Function:TableFieldIsEnabled        
Result-type:Boolean        
Arguments:cTableName, cFieldName        
Description:Returns 'T' if the specified field is enabled for the table        

 

 

Function:VarType        
Result-type:Text        
Arguments:eExpression        
Description:Returns a character representing the type of value the argument represents. 'C' = text (character), 'N' = numeric, 'D' = date, 'B' = boolean, 'R' = record, 'X' = null (error), 'U' = unknown        

 

 

 

 

 

 


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