Making sequences with variables
Factor handbook > The language > Collections

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The make vocabulary implements a facility for constructing sequences and assocs by holding a collector object in a variable. Storing the collector object in a variable rather than the stack may allow code to be written with less stack manipulation.

Object construction is wrapped in a combinator:
make ( quot exemplar -- seq )


Inside the quotation passed to make, several words accumulate values:
, ( elt -- )

% ( seq -- )

# ( n -- )


When making an assoc, you can use these words to add key/value pairs:
,, ( value key -- )

%% ( assoc -- )


The collector object can be accessed directly from inside a make:
building


USING: make math.parser ; [ "Language #" % CHAR: \s , 5 # ] "" make print
Language # 5

Make philosophy