lazyseq | a lazily evaluated sequence type for Python | Functional Programming library

by shoyer Python Version: 0.1.1 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | lazyseq Summary

lazyseq is a Python library typically used in Programming Style, Functional Programming applications. lazyseq has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can install using 'pip install lazyseq' or download it from GitHub, PyPI.

a lazily evaluated sequence type for Python

Support

Quality

Security

License

Reuse

Support

lazyseq has a low active ecosystem.

It has 6 star(s) with 2 fork(s). There are 2 watchers for this library.

It had no major release in the last 12 months.

lazyseq has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of lazyseq is 0.1.1

Quality

lazyseq has no bugs reported.

Security

lazyseq has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

lazyseq is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

lazyseq releases are not available. You will need to build from source code and install.

Deployable package is available in PyPI.

Build file is available. You can build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed lazyseq and discovered the below as its top functions. This is intended to give you an instant insight into lazyseq implemented functionality, and help decide if they suit your requirements.

Cache all cached items .
Get an item from the cache .
Return a string representation of the object .
Return an iterator over the cached items .
Iterate over the cached items .
Return the contents of a file .

Get all kandi verified functions for this library.

lazyseq Key Features

No Key Features are available at this moment for lazyseq.

lazyseq Examples and Code Snippets

No Code Snippets are available at this moment for lazyseq.

Community Discussions

Trending Discussions on lazyseq

Adding & removing elements in vector of maps in clojure

How do I simplify Compojure routes?

Getting unexpected sequence realization in Clojure

Trying to split string in Clojure running into lazy seq problem

Can't extract key from Map

Clojure: Why do I get StackOverflowError?

CircleCI config.yml for nodejs

testing if something is an empty list

Why does this Clojure prime generator raises a StackOverflowError?

datomic "index creation failed" "merge-db failed"

QUESTION

Adding & removing elements in vector of maps in clojure

Asked 2021-May-13 at 17:41

I have a use case to implement in my hobby project where i would need to add and remove elements in vector of maps, items, based on some criteria like below

Below following are the input data structures used in my code

Items is a LazySeq

...

ANSWER

Answered 2021-May-13 at 16:05

Use mapcat when processing a collection to produce zero or more output elements for each input element:

Source https://stackoverflow.com/questions/67521207

QUESTION

How do I simplify Compojure routes?

Asked 2021-Apr-25 at 18:36

I have the following code to define my routes in Compojure:

...

ANSWER

Answered 2021-Apr-25 at 18:36

routes (and thus defroutes) expects each argument to be a request handler function. A list of handlers is not a handler function; hence the error. Happily, there is a function to convert a list of handlers to a single handler: routes! Since it wants N separate arguments, rather than a single list, you will need apply as well. So:

Source https://stackoverflow.com/questions/67255964

QUESTION

Getting unexpected sequence realization in Clojure

Asked 2021-Feb-04 at 05:51

Noticed something odd while trying to troubleshoot a complex computation. I had an odd error so I started to build up the computation incrementally and pretty early on discovered that a very very long seq was being unexpectedly realized. I have a combinatoric seq of lists like so:

...

ANSWER

Answered 2021-Feb-04 at 00:40

I modified the example a bit as follows:

Source https://stackoverflow.com/questions/66037134

QUESTION

Trying to split string in Clojure running into lazy seq problem

Asked 2020-Dec-08 at 23:04

I am working on a problem to read in a file with lines like:

...

ANSWER

Answered 2020-Dec-08 at 17:59

The first argument to str/split must be a CharSequence to be split. Presumably you want to split each input line in the sequence for which you can use map without needing to eagerly evaluate the input sequence:

Source https://stackoverflow.com/questions/65203965

QUESTION

Can't extract key from Map

Asked 2020-Jul-26 at 20:46

I'm hitting an API that returns some json that I am trying to parse. I look a the keys of the returned parsed values and it says that it has a key "id", but when I try to get the id from the map, I get nothing back.

E.g.:

...

ANSWER

Answered 2020-Jul-26 at 20:46

It seems you are using cheshire.core/parse-string. This will return string keys, not keywords. See this example.

So, it appears that your key is the string "id", not the keyword :id. To verify this theory, try putting in the debugging statement:

Source https://stackoverflow.com/questions/63105391

QUESTION

Clojure: Why do I get StackOverflowError?

Asked 2020-Jul-15 at 09:13

(defn abs [int]
  (if (neg? int) (* -1 int) int))

(defn move [v]
  (let [[x y z] v]
    (cond
      (> x (abs y)) (map + v [0 1 1])
      (or
        (and (= x y) (pos? x) (pos? y))
        (> y (abs x))) (map + v [-1 0 1])
      (or
        (and (= (abs x) y) (neg? x) (pos? y))
        (and (> y x) (> (abs x) y))) (map + v [0 -1 1])
      :else (assoc [x y z] 0 (inc x) 2 (inc z))
      ;:else (map + v [1 0 1])
      )))


(last (take-while (fn [[x y z]] (< z 2000)) (iterate move [1 0 2])))

...

ANSWER

Answered 2020-Jul-15 at 09:13

map is lazy, it's not evaluates the mapping at once, but rather stacks mapping functions until the resulting collection really needs to be realized. So when you need the first item, it would do (+ v1 (+ v2 (+ v3 ..), and so forth, and it would eventually blow the stack for large number of maps stacked.

small example:

Source https://stackoverflow.com/questions/62910906

QUESTION

CircleCI config.yml for nodejs

Asked 2020-Jul-12 at 07:01

version: 2
  jobs:
    test:
      docker:
        - image: circleci/node:12.16
      steps:
        - checkout
        - run: echo "Running tests"
        - run: npm install
        - run: npm test
      build:
        docker:
          - image: circleci/node:12.16
        steps:
          - checkout
          - run: echo "build project"
          - npm install
          - npm run build
workflows:
  version: 2
    test_build:
      jobs:
        - test
        - build:
          requires:
            - test

...

ANSWER

Answered 2020-Jul-04 at 18:12

build is a job, just like test, and should be indented the same way it is:

Source https://stackoverflow.com/questions/62732682

QUESTION

testing if something is an empty list

Asked 2020-Mar-11 at 09:14

Which way should I prefer to test if an object is an empty list in Clojure? Note that I want to test just this and not if it is empty as a sequence. If it is a "lazy entity" (LazySeq, Iterate, ...) I don't want it to get realized?.

Below I give some possible tests for x.

...

ANSWER

Answered 2020-Mar-07 at 03:32

Just use choice (1):

Source https://stackoverflow.com/questions/60571478

QUESTION

Why does this Clojure prime generator raises a StackOverflowError?

Asked 2020-Feb-21 at 00:11

I am just learning Clojure and, as usual when lerning new programming languages, one of the first things I tried is implementing the Sieve of Eratosthenes.

I came up with the following solution:

...

ANSWER

Answered 2020-Feb-20 at 20:49

Here is a version that works:

Source https://stackoverflow.com/questions/60327936

QUESTION

datomic "index creation failed" "merge-db failed"

Asked 2020-Feb-01 at 10:14

After adding a new index in datomic I got this Error. The very same problem occured on one of my systems some Years ago and is still not fixed:

...

ANSWER

Answered 2020-Feb-01 at 10:14

found the SOLUTION

the transactor indexer ignores the path settings in the config file ("datomic.version" "0.9.5656" and before tested) and tries to save on actual relative file path.

I made the datomic-pro folder accessible and voilà it creates a ..../data directory and indexing works

in detail:

in my debian setup i have set the database path to data-dir=/var/lib/datomic all the db and tmp files are correctly stored in /var/lib/datomic the datomic pro installation is in /usr/local/share/datomic/datomic-pro-0.9.5656/ My relative path starting the transactor (via start-stop-daemon) is also /usr/local/share/datomic/datomic-pro-0.9.5656/.

indexing works in my case after:

Source https://stackoverflow.com/questions/53496885

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install lazyseq

You can install using 'pip install lazyseq' or download it from GitHub, PyPI.
You can use lazyseq like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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