Group: | Information and Control |
See also: | exist getglobal putglobal |
Function: | existglobal | |
Description: | existglobal checks existence of a global variable |
Usage: | r = existglobal ("name") | |
Input: | ||
name | name of an arbitrary object | |
Output: | ||
r | scalar |
The result will be
0 object doesn't exist
1 object is numeric
2 object is text
3 object has type XPLTIME
4 object is a display
9 composed objects (lists)
If the argument of existglobal denotes a quantlet, 10 is added. E.G.
if there is an object 'cov=1' and the library("xplore") is loaded,
existglobal("cov") results in 11 (10 for proc and 1 for numeric).
e = existglobal("eulerc") e
e contains either 1 (exists) or 0 (does not exist)