sym()
creates a symbol from a string and
syms()
creates a list of symbols from a
character vector.
expr()
and quo()
quote
one expression. quo()
wraps the quoted expression in a quosure.
The plural variants exprs()
and
quos()
return a list of quoted expressions or
quosures.
enexpr()
and enquo()
capture the expression supplied as argument by the user of the
current function (enquo()
wraps this expression in a quosure).
enexprs()
and enquos()
capture multiple expressions supplied as arguments, including
...
.