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@ -130,7 +130,7 @@ terms of [choice] as above). The more common "if..then..else" construct
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---------------------
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b
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</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[<a href="#pop">pop</a>] [<a href="#popd">popd</a>] <a href="#branch">branch</a></div></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>It's a matter of taste whether you implement this in terms of [branch] or
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the other way around.</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#branch" class="func_name">branch</a> <a href="#select" class="func_name">select</a></div></div><hr><div><h2 id="clear" class="func_name">clear <a href="#clear" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Clear everything from the stack.</p></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[] <a href="#swaack">swaack</a> <a href="#pop">pop</a></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#swaack" class="func_name">swaack</a></div><div class="backlinks"><h3>Used By</h3><a href="#enstacken" class="func_name">enstacken</a></div></div><hr><div><h2 id="cleave" class="func_name">cleave <a href="#cleave" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Run two programs in parallel, consuming one additional item, and put their
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the other way around.</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#branch" class="func_name">branch</a> <a href="#select" class="func_name">select</a></div></div><hr><div><h2 id="clear" class="func_name">clear <a href="#clear" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Clear everything from the stack.</p></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#enstacken">enstacken</a> <a href="#pop">pop</a></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#swaack" class="func_name">swaack</a></div></div><hr><div><h2 id="cleave" class="func_name">cleave <a href="#cleave" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Run two programs in parallel, consuming one additional item, and put their
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results on the stack.</p>
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<pre><code> ... x [A] [B] cleave
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------------------------
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@ -206,7 +206,7 @@ expressions, e.g.:
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------------------
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[a ...]
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</code></pre></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>Cons is a <a href="https://en.wikipedia.org/wiki/Cons#Lists">venerable old function from Lisp</a>.
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Its inverse operation is [uncons].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#uncons" class="func_name">uncons</a></div><div class="backlinks"><h3>Used By</h3><a href="#d5856351bbc14599e687dac105150e8a919b21477f3c00386405228caac1e43a" class="func_name">app2</a> <a href="#ccons" class="func_name">ccons</a> <a href="#codi" class="func_name">codi</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dipddd" class="func_name">dipddd</a> <a href="#grabN" class="func_name">grabN</a> <a href="#map" class="func_name">map</a> <a href="#nulco" class="func_name">nulco</a> <a href="#pow" class="func_name">pow</a> <a href="#2615278fdb89045cc766e529a8e31ba97e35d4215ee7c5bda4335d2667dec387" class="func_name">quote-two</a> <a href="#reco" class="func_name">reco</a> <a href="#swons" class="func_name">swons</a> <a href="#unit" class="func_name">unit</a> <a href="#zip" class="func_name">zip</a></div></div><hr><div><h2 id="dinfrirst" class="func_name">dinfrirst <a href="#dinfrirst" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Specialist function (that means I forgot what it does and why.)</p></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#dip">dip</a> <a href="#infrst">infrst</a></div></div><div class="backlinks"><h3>Used By</h3><a href="#nullary" class="func_name">nullary</a></div></div><hr><div><h2 id="dip" class="func_name">dip <a href="#dip" class="self_link">¶</a></h2><p><span class="kind">combinator</span> <span class="kind">built-in</span></p><div class="notes"><p>The <code>dip</code> combinator expects a quoted program on the stack and below it
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Its inverse operation is [uncons].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#uncons" class="func_name">uncons</a></div><div class="backlinks"><h3>Used By</h3><a href="#d5856351bbc14599e687dac105150e8a919b21477f3c00386405228caac1e43a" class="func_name">app2</a> <a href="#ccons" class="func_name">ccons</a> <a href="#codi" class="func_name">codi</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dipddd" class="func_name">dipddd</a> <a href="#grabN" class="func_name">grabN</a> <a href="#map" class="func_name">map</a> <a href="#nulco" class="func_name">nulco</a> <a href="#pow" class="func_name">pow</a> <a href="#2615278fdb89045cc766e529a8e31ba97e35d4215ee7c5bda4335d2667dec387" class="func_name">quote-two</a> <a href="#reco" class="func_name">reco</a> <a href="#stack" class="func_name">stack</a> <a href="#swons" class="func_name">swons</a> <a href="#unit" class="func_name">unit</a> <a href="#zip" class="func_name">zip</a></div></div><hr><div><h2 id="dinfrirst" class="func_name">dinfrirst <a href="#dinfrirst" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Specialist function (that means I forgot what it does and why.)</p></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#dip">dip</a> <a href="#infrst">infrst</a></div></div><div class="backlinks"><h3>Used By</h3><a href="#nullary" class="func_name">nullary</a></div></div><hr><div><h2 id="dip" class="func_name">dip <a href="#dip" class="self_link">¶</a></h2><p><span class="kind">combinator</span> <span class="kind">built-in</span></p><div class="notes"><p>The <code>dip</code> combinator expects a quoted program on the stack and below it
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some item, it hoists the item into the expression and runs the program
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on the rest of the stack. </p>
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<pre><code> ... x [Q] . dip
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@ -224,7 +224,7 @@ Continuation-Passing Style. The <code>dip</code> combinator could "set aside" t
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item and replace it after running <code>Q</code> but that means that there is an
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"extra space" where the item resides while <code>Q</code> runs. One of the nice
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things about CPS is that the whole state is recorded in the stack and
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pending expression (not counting modifications to the dictionary.)</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#dipd" class="func_name">dipd</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#dupdipd" class="func_name">dupdipd</a> <a href="#infra" class="func_name">infra</a></div><div class="backlinks"><h3>Used By</h3><a href="#anamorphism" class="func_name">anamorphism</a> <a href="#and" class="func_name">and</a> <a href="#d5856351bbc14599e687dac105150e8a919b21477f3c00386405228caac1e43a" class="func_name">app2</a> <a href="#b" class="func_name">b</a> <a href="#codi" class="func_name">codi</a> <a href="#dinfrirst" class="func_name">dinfrirst</a> <a href="#dipd" class="func_name">dipd</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dupd" class="func_name">dupd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#enstacken" class="func_name">enstacken</a> <a href="#grba" class="func_name">grba</a> <a href="#ii" class="func_name">ii</a> <a href="#infra" class="func_name">infra</a> <a href="#map" class="func_name">map</a> <a href="#" class="func_name">on-non-empty-list</a> <a href="#or" class="func_name">or</a> <a href="#over" class="func_name">over</a> <a href="#popd" class="func_name">popd</a> <a href="#popopd" class="func_name">popopd</a> <a href="#quoted" class="func_name">quoted</a> <a href="#shift" class="func_name">shift</a> <a href="#b75cae41e7f9ba4ab72cc1c5ec83aa5313ea180fae61bc25370ce4e4b540c3c7" class="func_name">spiral_next</a> <a href="#stackd" class="func_name">stackd</a> <a href="#swapd" class="func_name">swapd</a> <a href="#unquoted" class="func_name">unquoted</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="dipd" class="func_name">dipd <a href="#dipd" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Like [dip] but expects two items.</p>
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pending expression (not counting modifications to the dictionary.)</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#dipd" class="func_name">dipd</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#dupdipd" class="func_name">dupdipd</a> <a href="#infra" class="func_name">infra</a></div><div class="backlinks"><h3>Used By</h3><a href="#anamorphism" class="func_name">anamorphism</a> <a href="#and" class="func_name">and</a> <a href="#d5856351bbc14599e687dac105150e8a919b21477f3c00386405228caac1e43a" class="func_name">app2</a> <a href="#b" class="func_name">b</a> <a href="#codi" class="func_name">codi</a> <a href="#dinfrirst" class="func_name">dinfrirst</a> <a href="#dipd" class="func_name">dipd</a> <a href="#dipdd" class="func_name">dipdd</a> <a href="#dupd" class="func_name">dupd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#grba" class="func_name">grba</a> <a href="#ii" class="func_name">ii</a> <a href="#infra" class="func_name">infra</a> <a href="#map" class="func_name">map</a> <a href="#" class="func_name">on-non-empty-list</a> <a href="#or" class="func_name">or</a> <a href="#over" class="func_name">over</a> <a href="#popd" class="func_name">popd</a> <a href="#popopd" class="func_name">popopd</a> <a href="#quoted" class="func_name">quoted</a> <a href="#shift" class="func_name">shift</a> <a href="#b75cae41e7f9ba4ab72cc1c5ec83aa5313ea180fae61bc25370ce4e4b540c3c7" class="func_name">spiral_next</a> <a href="#stackd" class="func_name">stackd</a> <a href="#swapd" class="func_name">swapd</a> <a href="#unquoted" class="func_name">unquoted</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="dipd" class="func_name">dipd <a href="#dipd" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>Like [dip] but expects two items.</p>
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|
<pre><code> ... y x [Q] . dipd
|
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|
|
|
-------------------------
|
|
|
|
|
... . Q y x
|
|
|
|
|
@ -264,7 +264,7 @@ items removed off the top.</p>
|
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|
<pre><code> a dup
|
|
|
|
|
-----------
|
|
|
|
|
a a
|
|
|
|
|
</code></pre></div><div class="crosslinks"><h3>See Also</h3><a href="#dupd" class="func_name">dupd</a> <a href="#dupdd" class="func_name">dupdd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#dupdipd" class="func_name">dupdipd</a></div><div class="backlinks"><h3>Used By</h3><a href="#8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1" class="func_name">?</a> <a href="#abs" class="func_name">abs</a> <a href="#24eeb094bfbc05ab9fab7609e43f67a4b6f7f94db85bbab53d63ba083f006c9d" class="func_name">down_to_zero</a> <a href="#dupd" class="func_name">dupd</a> <a href="#dupdd" class="func_name">dupdd</a> <a href="#dupdipd" class="func_name">dupdipd</a> <a href="#6f80fffebc8c12f56af1a095e2263c68fb717db071f8b1da6737b2513b831d13" class="func_name">empty?</a> <a href="#gcd" class="func_name">gcd</a> <a href="#over" class="func_name">over</a> <a href="#range" class="func_name">range</a> <a href="#sqr" class="func_name">sqr</a> <a href="#tuck" class="func_name">tuck</a> <a href="#x" class="func_name">x</a></div></div><hr><div><h2 id="dupd" class="func_name">dupd <a href="#dupd" class="self_link">¶</a></h2><p></p><div class="notes"><p>[dup] the second item down on the stack.</p>
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|
</code></pre></div><div class="crosslinks"><h3>See Also</h3><a href="#dupd" class="func_name">dupd</a> <a href="#dupdd" class="func_name">dupdd</a> <a href="#dupdip" class="func_name">dupdip</a> <a href="#dupdipd" class="func_name">dupdipd</a></div><div class="backlinks"><h3>Used By</h3><a href="#8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1" class="func_name">?</a> <a href="#abs" class="func_name">abs</a> <a href="#24eeb094bfbc05ab9fab7609e43f67a4b6f7f94db85bbab53d63ba083f006c9d" class="func_name">down_to_zero</a> <a href="#dupd" class="func_name">dupd</a> <a href="#dupdd" class="func_name">dupdd</a> <a href="#dupdipd" class="func_name">dupdipd</a> <a href="#6f80fffebc8c12f56af1a095e2263c68fb717db071f8b1da6737b2513b831d13" class="func_name">empty?</a> <a href="#gcd" class="func_name">gcd</a> <a href="#over" class="func_name">over</a> <a href="#range" class="func_name">range</a> <a href="#sqr" class="func_name">sqr</a> <a href="#stack" class="func_name">stack</a> <a href="#tuck" class="func_name">tuck</a> <a href="#x" class="func_name">x</a></div></div><hr><div><h2 id="dupd" class="func_name">dupd <a href="#dupd" class="self_link">¶</a></h2><p></p><div class="notes"><p>[dup] the second item down on the stack.</p>
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|
|
<pre><code> a b dupd
|
|
|
|
|
--------------
|
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|
|
a a b
|
|
|
|
|
@ -293,8 +293,8 @@ It doesn't consume the list.</p></div><div class="definition_wrapper"><h3>Defini
|
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|
<pre><code> ... a b c enstacken
|
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|
|
|
-------------------------
|
|
|
|
|
[c b a ...]
|
|
|
|
|
</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#stack">stack</a> [<a href="#clear">clear</a>] <a href="#dip">dip</a></div></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>This is a destructive version of [stack]. See the note under
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|
[disenstacken] about the apparent but illusory reversal of the stack.</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="eq" class="func_name">eq <a href="#eq" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Compare the two items on the top of the stack for equality and replace
|
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|
|
</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[] <a href="#swaack">swaack</a></div></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>This is a destructive version of [stack]. See the note under
|
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|
|
[disenstacken] about the apparent but illusory reversal of the stack.</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#unstack" class="func_name">unstack</a></div><div class="backlinks"><h3>Used By</h3><a href="#clear" class="func_name">clear</a> <a href="#stack" class="func_name">stack</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="eq" class="func_name">eq <a href="#eq" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Compare the two items on the top of the stack for equality and replace
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|
|
them with a Boolean value.</p>
|
|
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|
|
<pre><code> a b eq
|
|
|
|
|
-------------
|
|
|
|
|
@ -610,7 +610,7 @@ the underlying [map] function is so implemented, of course.)</p></div></div><div
|
|
|
|
|
</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[<a href="#a318c24216defe206feeb73ef5be00033fa9c4a74d0b967f6532a26ca5906d3b">+</a>] [<a href="#3973e022e93220f9212c18d0d0c543ae7c309e46640da93a4a0314de999f5112">-</a>] <a href="#clop">clop</a></div></div></div><hr><div><h2 id="pop" class="func_name">pop <a href="#pop" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Pop the top item from the stack and discard it.</p>
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|
<pre><code> a pop
|
|
|
|
|
-----------
|
|
|
|
|
</code></pre></div><div class="crosslinks"><h3>See Also</h3><a href="#popd" class="func_name">popd</a> <a href="#popdd" class="func_name">popdd</a> <a href="#popop" class="func_name">popop</a> <a href="#popopd" class="func_name">popopd</a> <a href="#popopdd" class="func_name">popopdd</a> <a href="#popopop" class="func_name">popopop</a></div><div class="backlinks"><h3>Used By</h3><a href="#c1773bc23efd62ebecd69d025d1561e8fc864159ba2fc48177060e4b376112b5" class="func_name">/\</a> <a href="#7a063e4cb04c8b9d833cec4caea5b184720eba13daf25139c99a355a266d921f" class="func_name">\/</a> <a href="#anamorphism" class="func_name">anamorphism</a> <a href="#choice" class="func_name">choice</a> <a href="#clear" class="func_name">clear</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#first" class="func_name">first</a> <a href="#gcd" class="func_name">gcd</a> <a href="#78518975c83d0d8806d93d660084328db6e59595700dbd5ee160dd837bb8a5d0" class="func_name">max-of-two</a> <a href="#9afb997920c7e5e6ec7684b2bc31f1498712a4908a26f944f6eb503cebbe88c5" class="func_name">min-of-two</a> <a href="#popd" class="func_name">popd</a> <a href="#popdd" class="func_name">popdd</a> <a href="#popop" class="func_name">popop</a> <a href="#popopop" class="func_name">popopop</a> <a href="#size" class="func_name">size</a> <a href="#small" class="func_name">small</a> <a href="#b75cae41e7f9ba4ab72cc1c5ec83aa5313ea180fae61bc25370ce4e4b540c3c7" class="func_name">spiral_next</a> <a href="#take" class="func_name">take</a> <a href="#unstack" class="func_name">unstack</a> <a href="#zip" class="func_name">zip</a></div></div><hr><div><h2 id="popd" class="func_name">popd <a href="#popd" class="self_link">¶</a></h2><p></p><div class="notes"><p>[pop] the second item down on the stack.</p>
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</code></pre></div><div class="crosslinks"><h3>See Also</h3><a href="#popd" class="func_name">popd</a> <a href="#popdd" class="func_name">popdd</a> <a href="#popop" class="func_name">popop</a> <a href="#popopd" class="func_name">popopd</a> <a href="#popopdd" class="func_name">popopdd</a> <a href="#popopop" class="func_name">popopop</a></div><div class="backlinks"><h3>Used By</h3><a href="#c1773bc23efd62ebecd69d025d1561e8fc864159ba2fc48177060e4b376112b5" class="func_name">/\</a> <a href="#7a063e4cb04c8b9d833cec4caea5b184720eba13daf25139c99a355a266d921f" class="func_name">\/</a> <a href="#anamorphism" class="func_name">anamorphism</a> <a href="#choice" class="func_name">choice</a> <a href="#clear" class="func_name">clear</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#first" class="func_name">first</a> <a href="#gcd" class="func_name">gcd</a> <a href="#78518975c83d0d8806d93d660084328db6e59595700dbd5ee160dd837bb8a5d0" class="func_name">max-of-two</a> <a href="#9afb997920c7e5e6ec7684b2bc31f1498712a4908a26f944f6eb503cebbe88c5" class="func_name">min-of-two</a> <a href="#popd" class="func_name">popd</a> <a href="#popdd" class="func_name">popdd</a> <a href="#popop" class="func_name">popop</a> <a href="#popopop" class="func_name">popopop</a> <a href="#size" class="func_name">size</a> <a href="#small" class="func_name">small</a> <a href="#b75cae41e7f9ba4ab72cc1c5ec83aa5313ea180fae61bc25370ce4e4b540c3c7" class="func_name">spiral_next</a> <a href="#stack" class="func_name">stack</a> <a href="#take" class="func_name">take</a> <a href="#unstack" class="func_name">unstack</a> <a href="#zip" class="func_name">zip</a></div></div><hr><div><h2 id="popd" class="func_name">popd <a href="#popd" class="self_link">¶</a></h2><p></p><div class="notes"><p>[pop] the second item down on the stack.</p>
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<pre><code> a b popd
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--------------
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b
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@ -786,8 +786,8 @@ list.</p>
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<pre><code> ... c b a stack
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---------------------------
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... c b a [a b c ...]
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</code></pre></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>This function forms a pair with [unstack], and together they form the
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complement to the "destructive" pair [enstacken] and [disenstacken].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#enstacken" class="func_name">enstacken</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#stackd" class="func_name">stackd</a> <a href="#unstack" class="func_name">unstack</a></div><div class="backlinks"><h3>Used By</h3><a href="#enstacken" class="func_name">enstacken</a> <a href="#grba" class="func_name">grba</a> <a href="#nullary" class="func_name">nullary</a> <a href="#stackd" class="func_name">stackd</a> <a href="#stuncons" class="func_name">stuncons</a></div></div><hr><div><h2 id="stackd" class="func_name">stackd <a href="#stackd" class="self_link">¶</a></h2><p></p><div class="notes"><p>Grab the stack under the top item and put it onto the stack.</p>
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</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#enstacken">enstacken</a> <a href="#dup">dup</a> <a href="#cons">cons</a> <a href="#swaack">swaack</a> <a href="#pop">pop</a></div></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>This function forms a pair with [unstack], and together they form the
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complement to the "destructive" pair [enstacken] and [disenstacken].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#enstacken" class="func_name">enstacken</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#stackd" class="func_name">stackd</a> <a href="#unstack" class="func_name">unstack</a></div><div class="backlinks"><h3>Used By</h3><a href="#grba" class="func_name">grba</a> <a href="#nullary" class="func_name">nullary</a> <a href="#stackd" class="func_name">stackd</a> <a href="#stuncons" class="func_name">stuncons</a></div></div><hr><div><h2 id="stackd" class="func_name">stackd <a href="#stackd" class="self_link">¶</a></h2><p></p><div class="notes"><p>Grab the stack under the top item and put it onto the stack.</p>
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<h3>Example</h3>
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<pre><code> ... 1 2 3 stackd
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------------------------
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@ -832,7 +832,7 @@ with the list, and put the old stack onto it.</p>
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--------------------------
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6 5 4 [3 2 1]
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</code></pre></div><div class="discussion_wrapper"><h3>Discussion</h3><div class="discussion"><p>This function works as a kind of "context switch". It's used in the
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definition of [infra].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#infra" class="func_name">infra</a></div><div class="backlinks"><h3>Used By</h3><a href="#clear" class="func_name">clear</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#infra" class="func_name">infra</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="swap" class="func_name">swap <a href="#swap" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Swap the top two items on the stack.</p>
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definition of [infra].</p></div></div><div class="crosslinks"><h3>See Also</h3><a href="#infra" class="func_name">infra</a></div><div class="backlinks"><h3>Used By</h3><a href="#disenstacken" class="func_name">disenstacken</a> <a href="#enstacken" class="func_name">enstacken</a> <a href="#infra" class="func_name">infra</a> <a href="#stack" class="func_name">stack</a> <a href="#unstack" class="func_name">unstack</a></div></div><hr><div><h2 id="swap" class="func_name">swap <a href="#swap" class="self_link">¶</a></h2><p><span class="kind">built-in</span></p><div class="notes"><p>Swap the top two items on the stack.</p>
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<pre><code> a b swap
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--------------
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b a
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@ -930,7 +930,7 @@ the list. You cannot <code>uncons</code> an item from an empty list.</p>
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joy? unstack
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1 2 3 6 5 4
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</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[[] <a href="#swaack">swaack</a>] <a href="#dip">dip</a> <a href="#swoncat">swoncat</a> <a href="#swaack">swaack</a> <a href="#pop">pop</a></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#enstacken" class="func_name">enstacken</a></div></div><hr><div><h2 id="unswons" class="func_name">unswons <a href="#unswons" class="self_link">¶</a></h2><p></p><div class="notes"><pre><code> [a ...] unswons
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</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition">[<a href="#enstacken">enstacken</a>] <a href="#dip">dip</a> <a href="#swoncat">swoncat</a> <a href="#swaack">swaack</a> <a href="#pop">pop</a></div></div><div class="crosslinks"><h3>See Also</h3><a href="#stack" class="func_name">stack</a> <a href="#disenstacken" class="func_name">disenstacken</a> <a href="#enstacken" class="func_name">enstacken</a></div></div><hr><div><h2 id="unswons" class="func_name">unswons <a href="#unswons" class="self_link">¶</a></h2><p></p><div class="notes"><pre><code> [a ...] unswons
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---------------------
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[...] a
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</code></pre></div><div class="definition_wrapper"><h3>Definition</h3><div class="definition"><a href="#uncons">uncons</a> <a href="#swap">swap</a></div></div></div><hr><div><h2 id="warranty" class="func_name">warranty <a href="#warranty" class="self_link">¶</a></h2><p></p><div class="notes"><p>Print warranty information.</p></div></div><hr><div><h2 id="while" class="func_name">while <a href="#while" class="self_link">¶</a></h2><p><span class="kind">combinator</span> </p><div class="notes"><p>A specialization of [loop] that accepts a quoted predicate program <code>P</code>
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sforman