Re: [Gretl-users] String Operations: Removing Blank Spaces
On Tue, 25 Sep 2012, Henrique Andrade wrote:
I would like to know how can I remove the spaces before a specific
character in a string. Please take a look at my example:
<hansl>
string s1a = " @Gretl is great!"
string s2a = " @Gretl is really great!"
string s1b = strsub(s1a, " @", "")
string s2b = strsub(s2a, " @", "")
print s1b
print s2b
</hansl>
I need to remove the blank spaces before the "@" no matter how many blank
spaces I have. Does anyone have a suggestion?
1) If you know the starting non-space symbol you can use the
strstr() function:
<hansl>
string s1b = strstr(s1a, "@")
</hansl>
2) More generally,
<hansl>
loop while strncmp(s1a, " ", 1) == 0 --quiet
s1a = s1a + 1
endloop
</hansl>
Or via a function:
<hansl>
function string trimstr (string s)
loop while strncmp(s, " ", 1) == 0 --quiet
s = s + 1
endloop
return s
end function
string s1 = " @Gretl is great!"
s2 = trimstr(s1)
print s2
</hansl>
Allin Cottrell