Hello Yury, I offer the following clarification, hopefully:
all($stuff == 0) # checks if every element in $stuff is zero
all($stuff == 5) # checks if every element in $stuff is 5
all($stuff) # checks if every element in $stuff is boolean true
all($stuff) == 0 # checks if it is not the
Hi
I think it works as expected. What you are testing is if all ($a) is 0,
which is true, since one element in $a is 0.
You have to be careful with brackets.
pdl> print all($a)==0; # all returns 0 since the last value in $a == 0.
1
pdl> print all($a==0); # all returns 0 because only one $a
