Recent questions tagged clojure

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clojure - Iterate over all keys of nested map

Given: {:o {:i1 1 :i2 {:ii1 4}}} I'd like to iterate over the keys of the map in "absolute" ... the result. Basically only get the leaf nodes. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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clojure - couldn't use for loop in go block of core.async?

I'm new to clojure core.async library, and I'm trying to understand it through experiment. But when I ... m totally confused. What happend? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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463 views

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clojure - Need to force realization of lazy seqs before/after element-wise imperative operations?

If I perform a side-effecting/mutating operation on individual data structures specific to each member of lazy ... problem very clear.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

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clojure - Why does Datomic yield the same temporary ID twice in a row when iterating?

This will produce two different ids, which is great: #db/id[:db.part/user] #db/id[:db.part/user] but ... having this problem in any case.] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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576 views

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clojure - Why isn't my code printing like it should?

I'm trying to create a for in Clojure. I'm following the cheats sheet from the Clojure site. e.g: (take 100 ... Hello World 100 times. Why not? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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clojure - How to make a record from a sequence of values

I have a simple record definition, for example (defrecord User [name email place]) What is the best way to ... better way for achieving this... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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484 views

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clojure - Java: Getting Bytecode of Class at Runtime from within the Same JVM

Related to: Is there a way to obtain the bytecode for a class at runtime? I'm adding durability to ... at deserialization/class-load time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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507 views

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clojure - Set Ring-Anti-Forgery CSRF header token

I'm attempting to implement the Ring-Anti-Forgery library via setting the X-CSRF-Token in the header. Since ... Invalid anti-forgery token</h1> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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708 views

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clojure - Saving an image form clj-http request to file

I am trying to save a file downloaded using clj-http I have the following code: (def test-file (cl/ ... (Reflector.java:79) Help! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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906 views

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clojure - When should you use swap or reset

What is the difference between using swap! and reset! in Clojure functions? I have seen from the clojure. ... and reset! interchangeable? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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580 views

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clojure - When should you use swap or reset

What is the difference between using swap! and reset! in Clojure functions? I have seen from the clojure. ... and reset! interchangeable? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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502 views

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clojure - Embed version string from leiningen project in application

I want to be able to query or embed the version string set by the leiningen project and display that value ... application. Is this possible? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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clojure - Can I program for android using any JVM language?

Can I use other JVM languages besides Java (e.g. jruby, jython, clojure) to program for android, or is it ... 'd been any change since then. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

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clojure - Difference between using "def" to update a var and "alter-var-root"

What's the difference between using "def" to update a var and using "alter-var-root"? e.g. (def x 3) (def x ( ... x 3) (alter-var-root #'x inc) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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clojure - How to Reload files upon save when using swank+leiningen+emacs

I'm looking to set up slime+lein-swank to reload source files referenced from the repl when i save the file. ... to remember to do step 4. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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443 views

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clojure - Why does require in the ns form behave different from the require function

When I require libraries from the ns form I get : test> (ns test (:require '(clojure.contrib [logging : ... differently this is a bit confusing. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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546 views

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clojure - Executing a function with a timeout

What would be an idiomatic way of executing a function within a time limit? Something like, (with-timeout 5000 (do ... does not work in my case. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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578 views

1 answer

clojure - Keeping dependency versions up to date in Leiningen projects

Is there a simple way to find out what versions of dependencies are available using Leiningen? E.g., if I ... for dependency resolution). Ta. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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clojure - ref-set vs commute vs alter

What is the difference in the 3 ways to set the value of a ref in Clojure? I've read the docs several ... are and why each is needed? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

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clojure - What's the difference between Cake and Leiningen?

What's the difference between Cake and Leiningen? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

1 answer

clojure - Compojure development without web server restarts

I've written a small Swing App before in Clojure and now I'd like to create an Ajax-style Web-App. Compojure ... do I reload my stuff there? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

1 answer

clojure - How can I install Leiningen packages behind a firewall?

I use a local library to do some development, but the firewall prevents alot of internet sites. Is there a way to ... based on my project.clj?) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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512 views

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clojure - Using `line-seq` with `reader`, when is the file closed?

I'm reading lines from a text file using (line-seq (reader "input.txt")). This collection is then passed ... pattern I should be using here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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514 views

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clojure - Can't seem to require >!! or <!! in Clojurescript?

I must be missing something very obvious here but I'm trying to setup a very basic program to put an item onto a ... the <!! or >!! macros. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

1 answer

clojure - How can I set up leiningen to work with multiple projects?

I have multiple, separate leiningen projects that ostensibly could depend on one-another. Example: ~/projects/mywebapp (my ... I set this up? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

1 answer

clojure - Why can't tail calls be optimized in JVM-based Lisps?

Main question: I view the most significant application of tail call optimization (TCO) as a translation of a ... in finding earlier questions.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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523 views

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clojure - Anonymous function shorthand

There's something I don't understand about anonymous functions using the short notation #(..) The following works ... other notation doesn't? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

1 answer

clojure - Holding onto the head of a sequence

Reading a recent question I identified the function being discussed (def fib-seq (lazy-cat [0 1] ( ... Any clarifications would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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