exist - Script command

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Returns a number based on type of the string used in the command.

Syntax

Description

exist("x")

Returns

0 if there is no variable, operator, built-in function or script file (x.lsf) in the current script path

1 if x is a variable, example: x=5; ?exist(“x”);

2 if x is an operator or built in keyword, example: ?exist(“*”) or ?exist(“for”);

3 if x is a script file in the current script path, called “x.lsf”

Examples

The following simple examples show the usage of the exist command

a = 1:10;
?exist("a");
result: 
1  
?exist("farfield3d");
result: 
2