{smcl} {* 10feb2009}{...} {cmd:help mata mm_invtokens()} {hline} {title:Title} {p 4 4 2} {bf:mm_invtokens() -- Convert a string vector into a string scalar} {hline} {p 2 2 2}Note: An official {cmd:invtokens()} function was introduced in Stata 10 (see help {bf:{help mf_invtokens:[M-5] invtokens()}}). {p_end} {hline} {title:Syntax} {p 8 12 2} {it:string scalar} {cmd:mm_invtokens(}{it:string vector s} [{cmd:,} {it:real scalar noclean}]{cmd:)} {title:Description} {p 4 4 2} {cmd:mm_invtokens()} is the "inverse" of {bf:{help mf_tokens:tokens()}}. It returns the elements of {it:s} joined together in a single string where the individual elements are separated by blanks. {p 4 4 2} Elements containing blanks are enclosed in double quotes ("..."). Elements containing double quotes are enclosed in compound double quotes (`"..."'). Empty elements are returned as "". {p 4 4 2}{it:noclean}!=0 causes all elements to be enclosed in compound double quotes. {title:Remarks} {p 4 4 2}Example: {com}: s1 = ("mpg", "weight", "displacement") {res} {com}: s1 {res} {txt} 1 2 3 {c TLC}{hline 46}{c TRC} 1 {c |} {res} mpg weight displacement{txt} {c |} {c BLC}{hline 46}{c BRC} {com}: s2 = mm_invtokens(s1) {res} {com}: s2 {res} mpg weight displacement{txt} {title:Conformability} {cmd:mm_invtokens(}{it:s}{cmd:,} {it:noclean}{cmd:)} {it:s}: {it:r x} 1 or 1 {it:x c} {it:noclean}: 1 {it:x} 1. {it:result}: 1 {it:x} 1. {title:Diagnostics} {p 4 4 2}None. {title:Source code} {p 4 4 2} {help moremata_source##mm_invtokens:mm_invtokens.mata} {title:Author} {p 4 4 2} Ben Jann, University of Bern, jann@soz.unibe.ch {title:Also see} {p 4 13 2} Online: help for {bf:{help m4_string:[M-4] string}}, {bf:{help mf_tokens:tokens()}}, {bf:{help moremata}}