Re: [racket-users] racket 6.7 minimal+prebuilt no raco make?

Thanks, Sam. Got it. On Tue, Jan 10, 2017 at 10:23 AM, Sam Tobin-Hochstadt wrote: > The `compiler-lib` pkg will install the `raco make` command. > > Sam > > On Tue, Jan 10, 2017 at 10:21 AM, Deren Dohoda > wrote: > > Basically the subject. > > > >

[racket-users] racket 6.7 minimal+prebuilt no raco make?

Basically the subject. Downloaded the source for 6.7 minimal with prebuilt packages, compiled. I didn't see any errors. But apparently there's no "make" command for raco? The docs don't indicate this disappeared so I am a little confused. raco help indicates make is not a recognized command:

Re: [racket-users] literals vs datum-literals in syntax-parse

Basically, the difference is as follows: #:literals compares identifiers using free-identifier=?, but #:datum-literals compares them by using syntax-e and eq?. You can observe the difference using two extremely simple macros that only differ in their use of #:literals or #:datum-literals:

[racket-users] literals vs datum-literals in syntax-parse

I am still making most macros using syntax-rules and syntax-case because when I happened to learn macros these were the paths of least resistance. Every once in a while I try to learn a little more of syntax-parse since the few times I've tried it I really liked it. It appears that, in general,

[racket-users] Slack discussion for Racket

A while back, Jason Yeo created a Slack for talking about Racket at https://racket.slack.com/ After talking with some other Racket developers (and with Jason's permission), we're planning to make this an official part of the project. So you may see more people there, and it can be a place to talk

[racket-users] Distinguishing between a virtual connection and an actual one

Assuming my function is given a database connection, is there a way to distinguish an actual connection from a virtual one? More specifically, is there a way to tell if it's safe to use this connection as part of a (prepare) call? -- You received this message because you are subscribed to the

[racket-users] [ANN] New packages: compose-app and retry

I've added two new packages to the package catalog. The first, `compose-app`, provides a simple #%app macro for composing single-argument functions together: > (require compose-app) > (map (add1 .. string->number) (list "1" "2" "3")) (list 2 3 4) Optionally, you can use the package with

Re: [racket-users] Re: Distinguishing between a virtual connection and an actual one

On Tue, Jan 10, 2017 at 9:06 PM, George Neuner wrote: > On Tue, 10 Jan 2017 18:56:44 -0500, David Storrs > wrote: > >>Assuming my function is given a database connection, is there a way to >>distinguish an actual connection from a virtual one? More

[racket-users] Re: [racket-dev] Slack discussion for Racket

On 2017-01-10 16:48:42 -0500, Sam Tobin-Hochstadt wrote: > This doesn't mean that the IRC channel is going away, for anyone that > likes it. That's also an important community resource, and a popular > one, and it will be maintained. BTW, if there's anyone who likes IRC and wants to chat on

[racket-users] Futures vs Places?

I've done implementations with both and start to wonder where futures excel over map and places. Ive done two map implementations using futures and places. In heavy computations places is unquestionably the best, map and futures has small difference. In lighter computation places aren't worth

Re: [racket-users] racket 6.7 minimal+prebuilt no raco make?

The `compiler-lib` pkg will install the `raco make` command. Sam On Tue, Jan 10, 2017 at 10:21 AM, Deren Dohoda wrote: > Basically the subject. > > Downloaded the source for 6.7 minimal with prebuilt packages, compiled. I > didn't see any errors. But apparently there's