306
306
<dd>Executes <code>exe</code> in a <code><a
307
307
href="refF.html#fork">fork</a></code>'ed child process (which terminates
308
308
thereafter). In the first form, <code>pipe</code> just returns a file descriptor
309
to read from the standard output of that process. In the second form, it opens
310
the standard output of that process as input channel during the execution of
311
<code>prg</code>. The current input channel will be saved and restored
312
appropriately. See also <code><a href="refL.html#later">later</a></code>,
313
<code><a href="refI.html#ipid">ipid</a></code>, <code><a
309
to write to the standard input and read from the standard output of that
310
process. In the second form, it opens the standard output of that process as
311
input channel during the execution of <code>prg</code>. The current input
312
channel will be saved and restored appropriately. See also <code><a
313
href="refL.html#later">later</a></code>, <code><a
314
href="refI.html#ipid">ipid</a></code>, <code><a
314
315
href="refI.html#in">in</a></code> and <code><a
315
316
href="refO.html#out">out</a></code>.
318
319
: (pipe # equivalent to 'any'
319
(prinl "(a b # Comment^Jc d)") # (child process)
320
(read) ) # (parent process)
320
(prinl "(a b # Comment^Jc d)") # Child
322
324
: (pipe # pipe through an external program
323
(out '(tr "[a-z]" "[A-Z]") # (child process)
325
(out '(tr "[a-z]" "[A-Z]") # Child
324
326
(prinl "abc def ghi") )
325
(line T) ) # (parent process)
332
(in NIL # Child: Read stdin
334
(prinl (uppc @)) # and write to stdout
337
: (out P (prinl "abc def")) # Parent: Send line to child
339
: (in P (line)) # Parent: Read reply
340
-> ("A" "B" "C" " " "D" "E" "F")
329
343
<dt><a name="place"><code>(place 'cnt 'lst 'any) -> lst</code></a>
775
789
<dd>Implements a stack using a list in <code>var</code>. The <code>any</code>
776
790
arguments are cons'ed in front of the value list. See also <code><a
777
791
href="refP.html#push1">push1</a></code>, <code><a
792
href="refP.html#push1q">push1q</a></code>, <code><a
778
793
href="refP.html#pop">pop</a></code>, <code><a
779
794
href="refQ.html#queue">queue</a></code> and <code><a
780
795
href="refF.html#fifo">fifo</a></code>.
803
818
is cons'ed in front of the value list only if it is not already a <code><a
804
819
href="refM.html#member">member</a></code> of that list. See also <code><a
805
820
href="refP.html#push">push</a></code>, <code><a
821
href="refP.html#push1q">push1q</a></code>, <code><a
806
822
href="refP.html#pop">pop</a></code> and <code><a
807
823
href="refQ.html#queue">queue</a></code>.
836
<dt><a name="push1q"><code>(push1q 'var 'any ..) -> any</code></a>
837
<dd>Maintains a unique list in <code>var</code>. Each <code>any</code> argument
838
is cons'ed in front of the value list only if it is not already <code><a
839
href="refM.html#memq">memq</a></code> of that list (pointer equality). See also
840
<code><a href="refP.html#push">push</a></code>, <code><a
841
href="refP.html#push1">push1</a></code>, <code><a
842
href="refP.html#pop">pop</a></code> and <code><a
843
href="refQ.html#queue">queue</a></code>.
846
: (push1q 'S 'a (1) 'b (2) 'c)
850
: (push1q 'S 'b (1) 'd) # (1) is not pointer equal to the previous one
853
-> (d (1) c (2) b (1) a) # (1) is twice in the list
820
856
<dt><a name="put"><code>(put 'sym1|lst ['sym2|cnt ..] 'sym|0 'any) ->
821
857
any</code></a> <dd>Stores a new value <code>any</code> for a property key
822
858
<code>sym</code> (or in the symbol value for zero) in a symbol. That symbol is
added
removed
doc/refP.html
