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<friscosam>
bremner: you can also do that with a for/list form
<friscosam>
(for/list ([pair (in-list lst)]
<friscosam>
#:when
<friscosam>
(equal? (first pair) foo))
<friscosam>
pair)
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<lavaflow>
if I have two threads writing (write ... out) to a tcp port, those writes are supposed to be atomic right? one goes through, then the other? they shouldn't ever overlap?
<lavaflow>
thats what the docs lead me to believe, but that doesn't seem to be what I'm seeing.
<lavaflow>
"Racket’s file-stream ports, pipes, string ports, and TCP ports all support atomic writes;"
<lavaflow>
support it, but don't necessarily provide it?
<lavaflow>
do I need to use write-bytes-avail/enable-break to take advantage of atomic writes?
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<teardown>
im running racket version 6.4. i have installed libedit, but when i start racket thusly 'racket -I sicp -l xrepl' it silently exits. is this a know problem
<samth>
teardown: that command line requires the `sicp` module, then then `xrepl` module, and then exits
<samth>
teardown: you probably want to just do `racket -I sicp`
<bremner>
I don't think xrepl was default in 6.4 was it?
<bremner>
so long ago...
<teardown>
bremner: it isn't, i dont have any readline by default, where default is 'racket -I sicp'
<bremner>
teardown: can you update racket?
<bremner>
(without too much hassle)
<teardown>
samth: it looks like i have to specify -i when using -l xrepl, even though -i is default. wierd
<teardown>
bremner: yeah i can upgrade. but 'racket -I sicp -l xrepl -i' got me what i wanted
<teardown>
thank you both for your help
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<samth>
if xrepl is installed then it should turn itself on automatically. in general, you can configure this with your `.racketrc` file which is more likely to do what you want
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<teardown>
samth: yeah, probably
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