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--- trainingtutorial:create_code [2009/12/22 13:28]
shona.weldon
+++ trainingtutorial:create_code [2009/12/22 15:05]
shona.weldon
@@ Line 20: / Line 20: @@
+===== Parser Important Information and Limitations  =====
+  * The parser reads and executes left to right ALWAYS, it does not obey regular math ordering - BEDMAS (brackets, exponents, division, multiplication, addition, subtraction)
+  * Multiplication is NOT "Matrix" multiplication it is cell by cell multiplication with matching of the indicies.  When there is a dimension in
+  * Nesting of tool calls works to any depth, however, it can only be done for the left most inputs of the inputs for example:
+**Example 1** Nesting:
+    * This works (because the sum is the first input to the booleq tool):
+<code>A[] = booleq (sum (B[x]; dim=xName), 0) </code>
+    * but this does not (because the sum is now the second input to the booleq tool)
+<code>A[] = booleq (0, sum (B[x]; dim=xName)) </code>
+**Example 2** Nesting with infix
+    * Similarly for infix calling of tools, this works (because the sum is the first input to the "+" tool):
+<code>A[] = sum (B[x]; dim=xName) + 1 </code>
+    * but this does not (because the sum is now the second input to the "+" tool)
+<code>A[] =1 + sum (B[x]; dim=xName)  </code>

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