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21:35
<
msiism >
How would I write an empty symbol literally?
21:36
<
msiism >
When I run (string->symbol "") in the REPL, I get `'||`, but that doesn't seem to be it.
21:36
<
bremner >
uhh, something like '||
21:36
<
msiism >
Well, let me re-check.
21:36
<
bremner >
rudybot: eval '||
21:36
<
rudybot >
bremner: your sandbox is ready
21:36
<
rudybot >
bremner: ; Value: '||
21:37
<
bremner >
I mean, what do you mean by an empty symbol?
21:37
<
bremner >
rudybot: eval (string->symbol '||)
21:37
<
rudybot >
bremner: error: string->symbol: contract violation <NEWLINE> expected: string? <NEWLINE> given: '||
21:37
<
bremner >
rudybot: eval (symbol->string '||)
21:37
<
rudybot >
bremner: ; Value: ""
21:38
<
msiism >
Yeah '|| is actually it.
21:39
<
msiism >
I had a samll bug elsewhere in the code.
21:39
<
msiism >
s/samll/small/
21:39
<
bremner >
bugs happen
21:39
<
msiism >
I'm using this to make a function that filters data sets by type to also work with no type given.
21:40
<
msiism >
Like, if I don't specifiy a particular type, just return the data unfiltered.
21:40
<
bremner >
a racket convention is to use #f for "no value was given". Doesn't always work of course
21:40
<
msiism >
Yeah, but it's not an error.
21:41
<
msiism >
I'm doing thing so I can more easily "pipe" things together, without having to use `if` inbetween.
21:41
<
msiism >
s/thing/this/
21:43
<
msiism >
Like, (filter-by-date (filter-by-type type) date) or some such.
21:45
<
msiism >
It's a bit (or actually exactly?) like the Unix `find` command. If you don't specifiy any filter criteria, it returns all file names in a given directory.
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