collection | PHP library for representing and manipulating collections

 by   ramsey PHP Version: 2.0.0 License: MIT

kandi X-RAY | collection Summary

kandi X-RAY | collection Summary

collection is a PHP library. collection has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

ramsey/collection is a PHP library for representing and manipulating collections. Much inspiration for this library came from the Java Collections Framework. This project adheres to a code of conduct. By participating in this project and its community, you are expected to uphold this code.
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            kandi-support Support

              collection has a medium active ecosystem.
              It has 936 star(s) with 56 fork(s). There are 11 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 5 open issues and 31 have been closed. On average issues are closed in 91 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of collection is 2.0.0

            kandi-Quality Quality

              collection has 0 bugs and 0 code smells.

            kandi-Security Security

              collection has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              collection code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              collection is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              collection releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.
              collection saves you 381 person hours of effort in developing the same functionality from scratch.
              It has 936 lines of code, 132 functions and 29 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed collection and discovered the below as its top functions. This is intended to give you an instant insight into collection implemented functionality, and help decide if they suit your requirements.
            • Returns a string representation of a tool value .
            • Checks the value of a given type .
            • Merge another collection into this one .
            • Extract a value from an object
            • Filter named parameters .
            • Adds an element to the list
            • Get the head of the queue
            • Replaces a value for a given key .
            • Set an offset
            • Adds element to collection .
            Get all kandi verified functions for this library.

            collection Key Features

            No Key Features are available at this moment for collection.

            collection Examples and Code Snippets

            Adds a collection definition to a meta graph .
            pythondot img1Lines of Code : 73dot img1License : Non-SPDX (Apache License 2.0)
            copy iconCopy
            def add_collection_def(meta_graph_def, key, graph=None,
                                   export_scope=None, exclude_nodes=None,
                                   override_contents=None):
              """Adds a collection to MetaGraphDef protocol buffer.
            
              Args:
                meta_graph_def:  
            Sort a collection .
            pythondot img2Lines of Code : 45dot img2License : Permissive (MIT License)
            copy iconCopy
            def counting_sort(collection):
                """Pure implementation of counting sort algorithm in Python
                :param collection: some mutable ordered collection with heterogeneous
                comparable items inside
                :return: the same collection ordered by ascending  
            Insert item in the right collection .
            pythondot img3Lines of Code : 41dot img3License : Permissive (MIT License)
            copy iconCopy
            def insort_right(
                sorted_collection: list[int], item: int, lo: int = 0, hi: int = -1
            ) -> None:
                """
                Inserts a given value into a sorted array after other values with the same value.
            
                It has the same interface as
                https://docs.py  

            Community Discussions

            QUESTION

            in VS Code ImportError: cannot import name 'Mapping' from 'collections'
            Asked 2022-Mar-24 at 11:58

            I am trying to connect to Postgress and create a folder test.db via Flask. When I run "python3" in the terminal and from there when I run "from app import db" I get an import error:

            ...

            ANSWER

            Answered 2021-Oct-11 at 10:45

            Use older version of python (eg 3.8)

            Source https://stackoverflow.com/questions/69381312

            QUESTION

            Emulate BTreeMap::pop_last in stable Rust
            Asked 2022-Mar-15 at 16:55

            In the current stable Rust, is there a way to write a function equivalent to BTreeMap::pop_last?

            The best I could come up with is:

            ...

            ANSWER

            Answered 2022-Mar-15 at 16:55

            Is there a way to work around this issue without imposing additional constraints on map key and value types?

            It doesn't appear doable in safe Rust, at least not with reasonable algorithmic complexity. (See Aiden4's answer for a solution that does it by re-building the whole map.)

            But if you're allowed to use unsafe, and if you're determined enough that you want to delve into it, this code could do it:

            Source https://stackoverflow.com/questions/71455966

            QUESTION

            How to solve FirebaseError: Expected first argument to collection() to be a CollectionReference, a DocumentReference or FirebaseFirestore problem?
            Asked 2022-Jan-11 at 15:08

            I am trying to set up Firebase with next.js. I am getting this error in the console.

            FirebaseError: Expected first argument to collection() to be a CollectionReference, a DocumentReference or FirebaseFirestore

            This is one of my custom hook

            ...

            ANSWER

            Answered 2022-Jan-07 at 19:07

            Using getFirestore from lite library will not work with onSnapshot. You are importing getFirestore from lite version:

            Source https://stackoverflow.com/questions/69047904

            QUESTION

            Merge two files and add computation and sorting the updated data in python
            Asked 2021-Dec-16 at 15:02

            I need help to make the snippet below. I need to merge two files and performs computation on matched lines

            I have oldFile.txt which contains old data and newFile.txt with an updated sets of data.

            I need to to update the oldFile.txt based on the data in the newFile.txt and compute the changes in percentage. Any idea will be very helpful. Thanks in advance

            ...

            ANSWER

            Answered 2021-Dec-10 at 13:31

            Here is a sample code to output what you need. I use the formula below to calculate pct change. percentage_change = 100*(new-old)/old

            If old is 0 it is changed to 1 to avoid division by zero error.

            Source https://stackoverflow.com/questions/70267576

            QUESTION

            Inverting an Order-Preserving Minimal Perfect Hash Function in Better than O(K*lg N) Running Time
            Asked 2021-Nov-20 at 16:05

            I am trying to find a more efficient solution to a combinatorics problem than the solution I have already found.

            Suppose I have a set of N objects (indexed 0..N-1) and wish to consider each subset of size K (0<=K<=N). There are S=C(N,K) (i.e., "N choose K") such subsets. I wish to map (or "encode") each such subset to a unique integer in the range 0..S-1.

            Using N=7 (i.e., indexes are 0..6) and K=4 (S=35) as an example, the following mapping is the goal:
            0 1 2 3 --> 0
            0 1 2 4 --> 1
            ...
            2 4 5 6 --> 33
            3 4 5 6 --> 34

            N and K were chosen small for the purposes of illustration. However, in my actual application, C(N,K) is far too large to obtain these mappings from a lookup table. They must be computed on-the-fly.

            In the code that follows, combinations_table is a pre-computed two-dimensional array for fast lookup of C(N,K) values.

            All code given is compliant with the C++14 standard.

            If the objects in a subset are ordered by increasing order of their indexes, the following code will compute that subset's encoding:

            ...

            ANSWER

            Answered 2021-Oct-21 at 02:18

            Take a look at the recursive formula for combinations:

            Suppose you have a combination space C(n,k). You can divide that space into two subspaces:

            • C(n-1,k-1) all combinations, where the first element of the original set (of length n) is present
            • C(n-1, k) where first element is not preset

            If you have an index X that corresponds to a combination from C(n,k), you can identify whether the first element of your original set belongs to the subset (which corresponds to X), if you check whether X belongs to either subspace:

            • X < C(n-1, k-1) : belongs
            • X >= C(n-1, k-1): doesn't belong

            Then you can recursively apply the same approach for C(n-1, ...) and so on, until you've found the answer for all n elements of the original set.

            Python code to illustrate this approach:

            Source https://stackoverflow.com/questions/69646216

            QUESTION

            Is the key order the same for OrderedDict and dict?
            Asked 2021-Oct-27 at 08:38

            dict keeps insertion order since Python 3.6 (see this).

            OrderedDict was developed just for this purpose (before Python 3.6).

            Since Python 3.6, is the key order always the same for dict or OrderedDict?

            I wonder whether I can do this in my code and have always the same behavior (except of equality, and some extended methods in OrderedDict) but more efficiently:

            ...

            ANSWER

            Answered 2021-Oct-27 at 08:38

            I realize that the different behavior of equality (__eq__) can be actually a major concern, why such code snippet is probably not good.

            However, you could maybe still do this:

            Source https://stackoverflow.com/questions/69723468

            QUESTION

            Cant read data from collection in MongoDB Atlas Trigger
            Asked 2021-Oct-19 at 17:22

            New to MongoDB, very new to Atlas. I'm trying to set up a trigger such that it reads all the data from a collection named Config. This is my attempt:

            ...

            ANSWER

            Answered 2021-Oct-14 at 18:04

            The connection has to be a connection to the primary replica set and the user log in credentials are of a admin level user (needs to have a permission of cluster admin)

            Source https://stackoverflow.com/questions/69278930

            QUESTION

            What's the point of using [object instance].__self__?
            Asked 2021-Oct-18 at 00:50

            I was checking the code of the toolz library's groupby function in Python and I found this:

            ...

            ANSWER

            Answered 2021-Sep-22 at 13:05

            This is a somewhat confusing trick to save a small amount of time:

            We are creating a defaultdict with a factory function that returns a bound append method of a new list instance with [].append. Then we can just do d[key(item)](item) instead of d[key(item)].append(item) like we would have if we create a defaultdict that contains lists. If we don't lookup append everytime, we gain a small amount of time.

            But now the dict contains bound methods instead of the lists, so we have to get the original list instance back via __self__.

            __self__ is an attribute described for instance methods that returns the original instance. You can verify that with this for example:

            Source https://stackoverflow.com/questions/69270836

            QUESTION

            Why do I get “Lexical with name '$x' does not exist in this frame” when using “will leave”?
            Asked 2021-Jun-13 at 12:20

            I have the following Raku code:

            ...

            ANSWER

            Answered 2021-Jun-13 at 11:27

            This is a bug. Have made an issue for it: https://github.com/rakudo/rakudo/issues/4403

            I suggest using the workaround in the meantime.

            Source https://stackoverflow.com/questions/67949845

            QUESTION

            Enforce immutable collections in a Java record?
            Asked 2021-May-21 at 05:01

            Java records are used to implement shallowly immutable data carrier types. If the constructor accepts mutable types then we should implement explicit defensive copying to enforce immutability. e.g.

            ...

            ANSWER

            Answered 2021-May-19 at 13:59

            You can do it already, the arguments of the constructor are mutable:

            Source https://stackoverflow.com/questions/67604105

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

            Vulnerabilities

            No vulnerabilities reported

            Install collection

            Install this package as a dependency using Composer.

            Support

            Contributions are welcome! Before contributing to this project, familiarize yourself with CONTRIBUTING.md. To develop this project, you will need PHP 7.3 or greater and Composer.
            Find more information at:

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