Re: Why is the start function called -main

Clojure is always launched from Java, there's no way to bootstrap straight into Clojure from the JVM. So when you launch the JVM, it always starts in a Java main method. What Clojure does normally, is that it creates the Java main method for you, and have it call your own main method. So it

Re: Writing an Android application with Clojure

> > I think you'd be nuts to choose JVM Clojure over Kotlin for serious > Android development. > Yes, totally, just to clarify: 1) I don't recommend using JVM Clojure for Android development apart for just toy projects. 2) I do recommend using ClojureScript with React Native for Android

Re: [ANN] Insn: Functional JVM bytecode generation for Clojure.

Hello! MAGE author here. First off, insn looks super cool! I am excited to see where the project goes. Are you building it for a particular purpose like a compiler, or as a curiosity? With respect to MAGE, Mage provides fns for yielding the Clojure data that it consumes ... I ultimately

Re: Why is the start function called -main

2017-09-06 23:42 GMT+02:00 Justin Smith : > To define a method in gen-class you need to use a prefix on the function > name, "-" is the default prefix > ​I have to delve a little deeper into that on a rainy day. ​ > On Wed, Sep 6, 2017, 14:41 Cecil Westerhof

Re: Why is the start function called -main

To define a method in gen-class you need to use a prefix on the function name, "-" is the default prefix On Wed, Sep 6, 2017, 14:41 Cecil Westerhof wrote: > 2017-09-06 23:27 GMT+02:00 Matching Socks : > >> There is a hint, as to this, in the API doc

Re: Why is the start function called -main

2017-09-06 23:27 GMT+02:00 Matching Socks : > There is a hint, as to this, in the API doc of gen-class: > > https://clojure.github.io/clojure/clojure.core-api.html# > clojure.core/gen-class > ​That explains what happens, not why. ;-) -- Cecil Westerhof -- You received

Re: Why is the start function called -main

There is a hint, as to this, in the API doc of gen-class: https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/gen-class -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com

Why is the start function called -main

In C, C++ and Java the start function is called main. Why is it called -main in Clojure? -- Cecil Westerhof -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new

Re: Question regarding core.logic

On Tuesday, September 5, 2017 at 2:03:36 PM UTC-7, Laverne Schrock wrote: > > > On Tuesday, September 5, 2017 at 1:50:59 PM UTC-5, Russell Mull wrote: >> >> It's not really clear what you're trying to do, so it's hard to offer >> further advice. >> > > Essentially, what I'm trying to do is

Re: need help on json format extraction multiple deep

Thanks Andy. I love you man :) . I am new to start a project in clojure. Thanks for the help. Now, I need not go to Node.js. Regards Dinesh On Wednesday, 6 September 2017 17:06:46 UTC+5:30, Andy Fingerhut wrote: > > I don't know if this is the issue, but the JSON data has it spelled >

Re: What am I doing wrong

2017-09-06 15:18 GMT+02:00 Cecil Westerhof : > 2017-09-06 14:15 GMT+02:00 Gary Trakhman : > >> The second to last apply argument doesn't spread args like the last slot. >> > > ​OK, I changed it to: > (def digits > (apply str (map char

Re: What am I doing wrong

2017-09-06 14:15 GMT+02:00 Gary Trakhman : > The second to last apply argument doesn't spread args like the last slot. > ​OK, I changed it to: (def digits (apply str (map char (inclusive-range (int \0) (int \9) (def hex-digits (str digits (apply

Re: What am I doing wrong

The second to last apply argument doesn't spread args like the last slot. - terseness from phone On Sep 6, 2017 8:11 AM, "Cecil Westerhof" wrote: I have: (def digits (apply str (map char (inclusive-range (int \0) (int \9) and this gives:

What am I doing wrong

I have: (def digits (apply str (map char (inclusive-range (int \0) (int \9) and this gives: "0123456789" I also have: (def hex-digits (apply str digits (map char (inclusive-range (int \A) (int \F) and this gives: "0123456789ABCDEF"

Re: need help on json format extraction multiple deep

I don't know if this is the issue, but the JSON data has it spelled resolvedQuery, but you spelled it differently in your Clojure code as :resolvedQuerry (two "r"s in Query instead of one) In general, using a REPL session to examine the contents of data, or good old-fashioned debug print

Re: Starting Clojure again

2017-09-06 12:44 GMT+02:00 Ray Miller : > By the way does has clojure something like super? Using: > >> (defn create-pin-hex >> ([] (create-pin-hex 8)) >> >> is asking for trouble. After copy/pasting from create-pin I almost forgot >> to change it. >> >> > If your base

need help on json format extraction multiple deep

I have a json request coming as: Headers: //user defined headers Content-type: application/json POST body: { "lang": "en", "result": { "parameters": { "city": "Rome", "name": "Tom" }, "contexts": [], "resolvedQuery": "my name

Re: Starting Clojure again

On 6 September 2017 at 11:01, Cecil Westerhof wrote: > ​With the help of this list I rewrote it to: > (def digits > (apply str (map char (range (int \0) (inc (int \9)) > (def hex-digits > (apply str digits (map char (range (int \A) (inc (int \F)) > >

Re: Starting Clojure again

2017-09-06 9:58 GMT+02:00 Cecil Westerhof : > I want to start using Clojure again. I made the following simple function > to generate a PIN: > (defn create-pin > ([] (create-pin 8)) > ([n] >(let [chars (map char (range (int \0) (inc (int \9] > (reduce

Re: Starting Clojure again

2017-09-06 11:00 GMT+02:00 Ray Miller : > On 6 September 2017 at 09:50, Cecil Westerhof > wrote: > >> >> ​I am trying the following throwaway code: >> (defn create-pin >> ([] (create-pin 8)) >> ([n] >>{:pre [(<= n 128) >>(>= n 4)]} >>(let

Re: Starting Clojure again

On 6 September 2017 at 09:50, Cecil Westerhof wrote: > > ​I am trying the following throwaway code: > (defn create-pin > ([] (create-pin 8)) > ([n] >{:pre [(<= n 128) >(>= n 4)]} >(let [chars (into [] (concat (range (int \0) (inc (int \9))) (range > (int

Re: Starting Clojure again

2017-09-06 10:13 GMT+02:00 Cecil Westerhof : > Answering my own question. ;-) > > 2017-09-06 9:58 GMT+02:00 Cecil Westerhof : > >> The next step is that I want to use hexadecimal numbers. So I should use >> (range (int \0) (inc (int \9))) combined

Re: Starting Clojure again

2017-09-06 10:35 GMT+02:00 Mark Engelberg : > You could do that by calling vec on it. But you'd want to move the whole > let clause outside of the defn, so it is only evaluated once, not every > time the function is called. > ​Wen the function is finished. ;-) ​ >

Re: Starting Clojure again

2017-09-06 10:23 GMT+02:00 Colin Yates : > > The only way of answering that is with numbers, and I understand > https://github.com/hugoduncan/criterium/ is excellent for that. > > Personally, if I was asking that question I might also be wondering if > using a mutable data

Re: Starting Clojure again

You could do that by calling vec on it. But you'd want to move the whole let clause outside of the defn, so it is only evaluated once, not every time the function is called. But best, as I said earlier, is just to let chars be "0123456789ABCDEF". You can call nth on strings, so this is the most

Re: Starting Clojure again

The only way of answering that is with numbers, and I understand https://github.com/hugoduncan/criterium/ is excellent for that. Personally, if I was asking that question I might also be wondering if using a mutable data structure might be worth it (https://clojure.org/reference/transients). >

Re: Starting Clojure again

2017-09-06 10:13 GMT+02:00 dennis zhuang : > 1.Maybe you can use :pre metadata: > > (defn create-pin > ([] (create-pin 8)) > ([n] >{:pre [(<= n 16) > (>= n 4)]} >(let [chars (map char (range (int \0) (inc (int \9] > (reduce str (repeatedly n

Re: Starting Clojure again

(let [chars "0123456789ABCDEF"] ...) Replace `reduce` with `apply` to get the performance benefit of using a string builder behind the scenes. On Wed, Sep 6, 2017 at 12:58 AM, Cecil Westerhof wrote: > I want to start using Clojure again. I made the following simple

Re: Starting Clojure again

Answering my own question. ;-) 2017-09-06 9:58 GMT+02:00 Cecil Westerhof : > The next step is that I want to use hexadecimal numbers. So I should use > (range (int \0) (inc (int \9))) combined with (range (int \A) (inc (int > \F))). > How would I do that? > ​(concat

Re: Starting Clojure again

1.Maybe you can use :pre metadata: (defn create-pin ([] (create-pin 8)) ([n] {:pre [(<= n 16) (>= n 4)]} (let [chars (map char (range (int \0) (inc (int \9] (reduce str (repeatedly n #(rand-nth chars)) (create-pin 3) AssertionError Assert failed: (>= n 4)

Re: Starting Clojure again

Hi Cecil - welcome back! This would be perfect to test using the new clojure.spec. I can't give you any advice on the specifics as I have yet to break into it myself, but the properties of this function are crying out for generative testing. Cecil Westerhof writes: > I want to start using

Re: Writing an Android application with Clojure

Kotlin offers a lot more than just less verbose code and fixing quirks. It's a sufficiently large step up over Java that the experience of using it is completely different, in my experience. The null-safe type system is worth the price of entry alone. I totally recommend it for Android projects.

Starting Clojure again

I want to start using Clojure again. I made the following simple function to generate a PIN: (defn create-pin ([] (create-pin 8)) ([n] (let [chars (map char (range (int \0) (inc (int \9] (reduce str (repeatedly n #(rand-nth chars)) So far so good. But I want to improve a