The Racket GUI system is nice, but as with almost any GUI system, sometimes I
yearn for the simplicity of HTML rendering. CSS and JavaScript let
properly-styled HTML be easily inserted into almost any application without
anyone realizing it isn’t native, so long as it’s fast and seamless.
Basic
Forgot to mention 2 other oddities.
1) If there is more than one column, in-query requires parentheses
around the column list. None of the other row returning functions do.
But putting parentheses around * doesn't work ... it doesn't produce an
error but it returns nothing.
2) if you d
John Clements wrote on 12/10/2014 02:56 PM:
Possibly related: the last time I checked, there was no widely adopted
schema system for JSON, which is completely appalling. That is, it’s
not possible to document an HTTP call as “returning a JSON object with
field “timestamp” which is an integer an
Hi Ryan,
I'm confused by your response. What you're saying doesn't match what I
see.
On 12/10/2014 2:15 PM, Ryan Culpepper wrote:
On Dec 10, 2014, at 12:22 PM, George Neuner wrote:
> I'm using 6.0.1 and having problems trying to use in-query.
>
> First: in-query is the only function
Possibly related: the last time I checked, there was no widely adopted
schema system for JSON, which is completely appalling. That is, it’s not
possible to document an HTTP call as “returning a JSON object with field
“timestamp” which is an integer and “value” which is a string and no other
fields
On Dec 10, 2014, at 12:22 PM, George Neuner wrote:
> Hi all,
>
> I'm using 6.0.1 and having problems trying to use in-query.
>
> First: in-query is the only function that can use cursors, but, unlike the
> other row returning functions (query, query-rows, query-maybe-row), in-query
> d
You can generate a struct-accessor-procedure using struct-info, and use
that with integer indexes.
Sam
On Wed Dec 10 2014 at 2:00:34 PM Benjamin Greenman
wrote:
> Ok, thank you.
>
> Is struct->vector the best way to access fields positionally?
>
> On Wed, Dec 10, 2014 at 7:30 AM, Matthew Flat
Ok, thank you.
Is struct->vector the best way to access fields positionally?
On Wed, Dec 10, 2014 at 7:30 AM, Matthew Flatt wrote:
> Currently, the run-time representation of a struct doesn't include
> field names. In that sense, field names don't exist at run time, and
> all fields are accesse
Hi all,
I'm using 6.0.1 and having problems trying to use in-query.
First: in-query is the only function that can use cursors, but,
unlike the other row returning functions (query, query-rows,
query-maybe-row), in-query doesn't appear to understand Postgresql
array fields - they are re
Racket Users list:
http://lists.racket-lang.org/users
Currently, the run-time representation of a struct doesn't include
field names. In that sense, field names don't exist at run time, and
all fields are accessed by position.
We plan to change the structure-type core to add field names, but it
hasn't happened, yet.
At Wed, 10 Dec 2014 04:36:50 -050
I'm hoping to implement the following function to access arbitrary struct
fields.
;; Compute `[st]-field-name st`, where
;; [st] is the name of the struct type of `st`
(define (runtime-get st field-name)
(-> struct? string? any/c)
(error "not implemented"))
Is this possible? I fear I can't us
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