manual:chapter6:operators:cmd_ovr_eval

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manual:chapter6:operators:cmd_ovr_eval [2019/11/06 15:31]
jojo1973 		manual:chapter6:operators:cmd_ovr_eval [2019/11/17 08:23] (current)
jojo1973 Highlighted EVAL when used in technical sense
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   * **Local Name**: ''EVAL'' //recalls// the content of the variable.   * **Local Name**: ''EVAL'' //recalls// the content of the variable.
   * **Global Name**: ''EVAL'' //calls// the content of a variable:   * **Global Name**: ''EVAL'' //calls// the content of a variable:
-    - a __Name__ is evaluated; +    - a __Name__ is ''EVAL''uated; 
-    - a __Program__ is evaluated;+    - a __Program__ is ''EVAL''uated;
     - a __Directory__ becomes the current directory;     - a __Directory__ becomes the current directory;
     - __other objects__ which are not lists are put on the stack.     - __other objects__ which are not lists are put on the stack.
   * **Program**: ''EVAL'' //enters// each object in the program:   * **Program**: ''EVAL'' //enters// each object in the program:
-    - an [[manual:chapter6:dirs:cmd_unquoteid|unquoted]] __Name__ is evaluated;+    - an [[manual:chapter6:dirs:cmd_unquoteid|unquoted]] __Name__ is ''EVAL''uated;
     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;
     - __other objects__ which are not lists are put on the stack.     - __other objects__ which are not lists are put on the stack.
   * **Symbolic expression**: ''EVAL'' //enters// each object in the expression:   * **Symbolic expression**: ''EVAL'' //enters// each object in the expression:
-    - a __Name__ is evaluated;+    - a __Name__ is ''EVAL''uated;
     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;
     - __other objects__ which are not lists are put on the stack.     - __other objects__ which are not lists are put on the stack.
   * **Other objects**: if they are not lists ''EVAL'' puts them on the stack.   * **Other objects**: if they are not lists ''EVAL'' puts them on the stack.
   * **List**: ''EVAL'' //enters// each object in the list:   * **List**: ''EVAL'' //enters// each object in the list:
-    - __any object__ is evaluated according above mentioned rules.+    - __any object__ is ''EVAL''uated according above mentioned rules.
          
 As a final step, ''EVAL'' will perform numerical simplification according to the status of flags from [[manual:appendix:flags#flag-70|-70]] to [[manual:appendix:flags#flag-78|-78]]. As a final step, ''EVAL'' will perform numerical simplification according to the status of flags from [[manual:appendix:flags#flag-70|-70]] to [[manual:appendix:flags#flag-78|-78]].
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   * In userRPL, if the argument is a list ''EVAL'' //enters// any object in the list, then:   * In userRPL, if the argument is a list ''EVAL'' //enters// any object in the list, then:
-    - a __Name__ is evaluated; +    - a __Name__ is ''EVAL''uated; 
-    - a __Program__ is evaluated;+    - a __Program__ is ''EVAL''uated;
     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;     - a __Keyword__ is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted;
     - __other objects__ are put on the stack.     - __other objects__ are put on the stack.
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 </code> </code>
 will perform the following steps: will perform the following steps:
-  - ''CIRCUM'' (a //global name//) is evaluated; +  - ''CIRCUM'' (a //global name//) is ''EVAL''uated; 
-  - ''« TWOPI * »'' (a //program//) is evaluated; +  - ''« TWOPI * »'' (a //program//) is ''EVAL''uated; 
-  - ''TWOPI'', the first object (a //global name//) in the program is evaluated;+  - ''TWOPI'', the first object (a //global name//) in the program is ''EVAL''uated;
   - ''6.28'' (a //real number//) is put on the stack;   - ''6.28'' (a //real number//) is put on the stack;
   - ''[[manual:chapter6:operators:cmd_ovr_mul|*]]'', the second object (a //keyword//) in the program is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted.   - ''[[manual:chapter6:operators:cmd_ovr_mul|*]]'', the second object (a //keyword//) in the program is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted.
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 </code> </code>
 will perform the following steps: will perform the following steps:
-  - ''%%'16'%%'' (a //symbolic expression//) is evaluated;+  - ''%%'16'%%'' (a //symbolic expression//) is ''EVAL''uated;
   - ''16'' (a //real number//) is put on the stack;   - ''16'' (a //real number//) is put on the stack;
   - ''[[manual:chapter6:transcendentals:cmd_sqrt|√]]'' (a //keyword//) is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted.   - ''[[manual:chapter6:transcendentals:cmd_sqrt|√]]'' (a //keyword//) is ''[[manual:chapter6:operators:cmd_ovr_xeq|XEQ]]''ted.
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