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Shell script

CSH/TCSH

"if" statement

Basic useage:


            if ( expr ) then

                command

            else

                command-else

            endif

The expressions are


            -e : exist?

            -r : readable?

            -w : writable?

            -x : executable?

            -o : owned?

            -d : directrory?

            -f : normal file?

            -z : zero-filesize

            + - * / % << >> : arithmetic

            < > <= >= : comparison (number)

            == != : comparison (number, string)

            ! && || : bool algebra

CERN Root

TString

 
            TObjArray *linetok = line.Tokenize('/');

            TString str = ((TObjString*)(linetok->At(0)))->GetString();

Lua

Reference: Programming in Lua (first edition)