{@ _defs_.md || 0 @}

{#op||all?||{{q1}} {{q2}}||{{b}}||
Applies predicate {{q2}} to each element of {{q1}} and returns {{t}} if all elements of {{q1}} satisfy predicate {{q2}}, {{f}} otherwise. #}

{#op||any?||{{q1}} {{q2}}||B||
Applies predicate {{q2}} to each element of {{q1}} and returns {{t}} if at least one element of {{q1}} satisfies predicate {{q2}}, {{f}} otherwise. #}

{#op||append||{{any}} {{q}}||({{a0p}} {{any}})||
Returns a new quotation containing the contents of {{q}} with {{any}} appended. #}

{#op||apply||{{q}}||({{a0p}})||
Returns a new quotation {{q}} obtained by evaluating each element of {{q}} in a separate stack.#}

{#op||get||{{q}} {{i}}||{{any}}||
Returns the _n^th_ element of {{q}} (zero-based).#}

{#op||concat||{{q1}} {{q2}}||{{q3}}||
Concatenates {{q1}} with {{q2}}. #}

{#op||ddel||{{d1}} {{sl}}||{{d2}}||
Returns a copy of {{d1}} without the element with key {{sl}}. #}

{#op||filter||{{q1}} {{q2}}||{{q3}}||
> Returns a new quotation {{q3}} containing all elements of {{q1}} that satisfy predicate {{q2}}.
> 
> > %sidebar%
> > Example
> > 
> > The following program leaves `(2 6 8 12)` on the stack:
> > 
> >     (1 37 34 2 6 8 12 21) 
> >     (dup 20 < swap even? and) filter #}

{#op||dget||{{d}} {{sl}}||{{any}}||
Returns the value of key {{sl}} from dictionary {{d}}. #}

{#op||dhas?||{{d}} {{sl}}||{{b}}||
> Returns {{t}} if dictionary {{d}} contains the key {{sl}}, {{f}} otherwise.
> 
> > %sidebar%
> > Example
> >  
> > The following program returns {{t}}:
> > 
> >     ((a1 true) (a2 "aaa") (a3 false)) 'a2 dhas?
 #}

{#op||dset||{{d1}} {{any}} {{sl}}||{{d2}}||
Sets the value of the {{sl}} of {{d1}}  to {{any}}, and returns the modified copy of the dictionary {{d2}}. #}

{#op||first||{{q}}||{{any}}||
Returns the first element of {{q}}. #}

{#op||in?||{{q}} {{any}}||{{b}}||
Returns {{t}} if {{any}} is contained in {{q}}, {{f}} otherwise.#}

{#op||insert||{{q1}} {{any}} {{i}}||{{q2}}||
Inserts {{any}} as the value of the _n^th_ element {{q1}} (zero-based), and returns the modified copy of the quotation {{q2}}. #}

{#op||keys||{{q}}||({{s}}{{0p}})||
Returns a quotation containing all the keys of dictionary {{d}}. #}

{#op||map||{{q1}} {{q2}}||{{q3}}||
Returns a new quotation {{q3}} obtained by applying {{q2}} to each element of {{q1}}.#}

{#op||prepend||{{any}} {{q}}||({{any}} {{a0p}})||
Returns a new quotation containing the contents of {{q}} with {{any}} prepended. #}

{#op||reject||{{q1}} {{q2}}||{{q3}}||
Returns a new quotatios {{q3}} including all elements of {{q1}} that do not satisfy predicate {{q2}} (i.e. the opposite of `filter`)#}

{#op||remove||{{q1}} {{i}}||{{q2}}||
Returns the _n^th_ element of {{q1}} (zero-based), and returns the modified copy of the quotation {{q2}}.#}

{#op||rest||{{q1}}||{{q2}}||
Returns a new quotation {{q2}} containing all elements of {{q1}} quotation except for the first. #}

{#op||reverse||{{q1}}||{{q2}}||
Returns a new quotation {{q2}} containing all elements of {{q1}} in reverse order. #}

{#op||set||{{q1}} {{any}} {{i}}||{{q2}}||
Sets the value of the _n^th_ element {{q1}} (zero-based) to {{any}}, and returns the modified copy of the quotation {{q2}}. #}

{#op||shorten||{{q1}} {{i}}||{{q2}}||
Returns a quotation {{q2}} containing the first _n_ values of the input quotation {{q1}}. #}

{#op||size||{{q}}||{{i}}||
Returns the length of {{q}}.#}

{#op||sort||{{q1}} {{q2}}||{{q3}}||
> Sorts all elements of {{q1}} according to predicate {{q2}}. 
> 
> > %sidebar%
> > Example
> > 
> > The following program leaves `(1 3 5 7 9 13 16)` on the stack:
> > 
> >     (1 9 5 13 16 3 7) '> sort #}

{#op||values||{{d}}||({{a0p}})||
Returns a quotation containing all the values of dictionary {{d}}. #}