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visual3d:documentation:pipeline:expressions:example_using_the_amp_operator [2024/06/19 13:59] – created sgrangervisual3d:documentation:pipeline:expressions:example_using_the_amp_operator [2024/07/17 15:45] (current) – created sgranger
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-===== Contents =====+====== Example using the AMP Operator ====== 
 + 
 +==== Contents ====
  
  
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-===== The Ampersand Operator =====+==== The Ampersand Operator ====
  
 For first time users of Visual3D's scripting language the use of the & operator may not be straightforward. The [[https://www.c-motion.com/v3dwiki/index.php?title=Expressions|Expressions]] page contains some links and examples of how to use this operator including: For first time users of Visual3D's scripting language the use of the & operator may not be straightforward. The [[https://www.c-motion.com/v3dwiki/index.php?title=Expressions|Expressions]] page contains some links and examples of how to use this operator including:
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 The ampersand (&) is used in pipeline commands to concatenate strings together, and is a separator for the parser to find pieces that need to be parsed separately. To get the most out of this tutorial, it is recommended that you run the commands in Visual3D alongside reading the text descriptions, as the Pipeline Processing Results dialog is a helpful tool for understanding and debugging in this interface. The ampersand (&) is used in pipeline commands to concatenate strings together, and is a separator for the parser to find pieces that need to be parsed separately. To get the most out of this tutorial, it is recommended that you run the commands in Visual3D alongside reading the text descriptions, as the Pipeline Processing Results dialog is a helpful tool for understanding and debugging in this interface.
  
-===== Example 1: Jane Elizabeth Doe =====+==== Example 1: Jane Elizabeth Doe ====
  
 Let there be a Visual3D workspace in which we have three parameters: FIRST_NAME, MIDDLE_NAME and LAST_NAME. Let us set each of these parameter values to be JANE, ELIZABETH and DOE, respectively: Let there be a Visual3D workspace in which we have three parameters: FIRST_NAME, MIDDLE_NAME and LAST_NAME. Let us set each of these parameter values to be JANE, ELIZABETH and DOE, respectively:
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 Which now evaluates to JANE ELIZABETH DOE. Which now evaluates to JANE ELIZABETH DOE.
  
-===== Example 2: Jane and John Doe =====+==== Example 2: Jane and John Doe ====
  
 Say we want to compare two string variables A and B: Say we want to compare two string variables A and B:
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 This expression successfully evaluates (meaning it gives no errors), but does not produce the correct result. As you can see in the image below, the expression explicitly evaluates (::A=::B) to a value of 0. It does not actually read in the variables that we want to compare. This expression successfully evaluates (meaning it gives no errors), but does not produce the correct result. As you can see in the image below, the expression explicitly evaluates (::A=::B) to a value of 0. It does not actually read in the variables that we want to compare.
  
-{{janeandjohn1.png}}+{{:janeandjohn1.png}}
  
 Let's add some "glue" and see what happens: Let's add some "glue" and see what happens:
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 And voila, there you have it. And voila, there you have it.
  
-===== Example 3: Jane and John go to the Market =====+==== Example 3: Jane and John go to the Market ====
  
 Let’s say Jane and John have gone to a fruit stand at a local farmer’s market. Jane has purchased 33 apples and John has purchased 24 oranges. These values are stored in the DERIVED signal type under the folder MARKET as APPLES and ORANGES. Let’s say Jane and John have gone to a fruit stand at a local farmer’s market. Jane has purchased 33 apples and John has purchased 24 oranges. These values are stored in the DERIVED signal type under the folder MARKET as APPLES and ORANGES.
visual3d/documentation/pipeline/expressions/example_using_the_amp_operator.1718805563.txt.gz · Last modified: 2024/06/19 13:59 by sgranger