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Angle Brackets operator, Calculate function
Example
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/* The following example shows you how to evaluate column values by reference to the dictionary column name. |
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*/
/* The following function segment opens the SAMPLE_PRODUCTS table, then the dictionary of that table, then reads the desired row, using @ID, then reads the desired column value, using the dictionary column name. It returns the price of the specified item. */
table = "SAMPLE_PRODUCTS"
key = "TCHBUL" |
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;* the technical bulletins product UnitPrice = "" |
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;* initialize the return variable
@ID = key
Open table To tablevar Then
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Open "DICT ":table To @DICT Then |
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Read @RECORD FROM tablevar, @ID Then
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UnitPrice = {RETAIL_PRICE} |
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End Else |
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status = Set_FSError( )
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End ;* Read |
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End Else
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status = Set_FSError( ) |
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End ;* Open dictionary End Else |
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status = Set_FSError( )
End ;* Open table
/* Convert the value of RETAIL_PRICE, which is stored in internal format, to a display format. */
Return OConv(UnitPrice, "MD2,$")
The following three code segments are equivalent:
temp = {INV_AMT}
temp = Calculate( INV_AMT)
dict_ |
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field = "INV_AMT" field_value = Calculate(dict_field) * Notice that in each case, the dictionary * word INV_AMT is executed. |
