Remove all whitespace from a string variable.

[Inaamul Haq]

How can I remove all whitespace from a string variable?
For example, if I have the below data:

* Example generated by -dataex-. To install: ssc install dataex
clear
input str20 var
"Hello"     
"Hello"     
"Hello"     
"Hello"     
"HelloThere"
"HelloThere"
end

I want all the values of the variable to appear as "HelloThere" .
I tried

strtrim

but that doesn't seem to seem to remove single space between two words.

[Hemanshu Kumar]

replace var = subinstr(var," ","",.)

[Leonardo Guizzetti]

#2 will be helpful if you are certain that all whitespace are in fact plain spaces. But what if there are other types of whitespace? For this, you can use regular expressions.

gen newvar = ustrregexra(var, "\s", "")