------------- *** the DO command *** -------------
> do "put" && theValue && "into field" && theField
Anthony: What's wrong with: put theValue into field
theField ?!
Alain: OK, it was a bad example.
Anthony: I think the 'do' command has made people fail
to realize what HC syntax allows!
Alain: I am thoroughly familiar with HyperTalk. I have
been using it since day-one that it came out. It has
been my main programming language for 14 years now. I
even created an educational program entirely with HC
that teaches HyperTalk-Scripting to future teachers of
all levels of computing experience.
Alain: Below is a much better illustration of the
power of the DO command. In a nutshell, it allows you
to mix-and-match three (3) different scripting
languages inside the same script: HyperTalk, Perl, and
AppleScript. And, moreover, params can be passed to
these other languages.
on closeField
----
makeTable fld "TP", fld "DK", fld "DV"
copyCGI "dispatch.cgi"
----
end closeField
on makeTable(path, key, values)
----
put "$TP = '" & path & "'; " & return after var
put "$DK = '" & key & "'; " & return after var
put "$DV = '" & values & "'; " & return after var
----
put readFile("makeTable.pl") & return after var
----
do var as perl
----
end makeTable
on copyCGI programName
----
put "HD:Source:" & programName into sourcePath
put "HD:Destination:" & programName into destinPath
----
put "tell application" && quote & "Finder" & quote &
return after scriptVar
put "set source to (" & sourcePath & ") as alias" &
return after scriptVar
put "set destination to (" & destinPath & ") as
alias" & return after scriptVar
put "duplicate source to destination with replacing"
& return after scriptVar
put "end tell" after scriptVar
----
do scriptVar as appleScript
----
end copyCGI
Alain: Please note that the lines of the 3rd handler
may wrap themselves if your Email client's window is
small. Copy and paste them into a suitable editor if
you have difficulty reading the handler.
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