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error 404 subtract | revDocs | RunRev
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Product Edition
Version
subtract
Basics
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Type
Command
Syntax
subtract number from [chunk of] container subtract {number | array} from arrayContainer
Introduced
1.0
Changed
1.1
Environment
Desktop, Web and Server
Platform Support
MacOS,Mac OS X,Windows,Linux
Security
None required
Summary
Subtracts a number from a container and places the resulting value in the container.
Examples

subtract 15 from oldNumber
subtract field "Input" from word 2 of field "Output"
subtract monthlyExpenses from monthlyTotals

Additional Comments
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Use the subtract command to subtract a number from a container or a portion of a container, or to subtract two arrays containing numbers.

Parameters:

The chunk is a chunk expression specifying a portion of the container.

The container is a field, button, or variable, or the message box.

The number is any expression that evaluates to a number.

The arrayContainer is an array variable each of whose elements is a number.

Comments:

The contents of the container (or the chunk of the container) must be a number or an expression that evaluates to a number.

If a number is subtracted from an arrayContainer, the number is subtracted from each element. If an array is subtracted from an arrayContainer, both arrays must have the same number of elements and the same dimension, and each element in the array is subtracted from the corresponding element of the arrayContainer.

If the container or an element of the arrayContainer is empty, the subtract command treats its contents as zero.

If container is a field or button, the format of the sum is determined by the numberFormat property.

Changes to Revolution:

The subtract from arrayContainer form was introduced in version 1.1. In previous versions, only single numbers could be used with the subtract command.

User Comments
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