Using "strpos" to create new variable

[Nelson Mathews]

I want to use the command "strpos" to extract specific observations from a string variable. Im using the command below,
"g newvar = 1 if strpos(var1, "[1]")>0 "

The using variable "var1" looks like below

var1

0 1 2 3
3 4 0 1


I would like to create a variable that takes the value 1 if var1 consists string obs 1. Any help on this would be really appreciated.

[Nick Cox]

g newvar =  strpos(var1, "1") > 0

[Nelson Mathews]

Thank you, this was very helpful.