Collections Questions
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When using a HashMap are values and keys guaranteed to be in the same order when iterating?
When i iterate over the values or keys are they going to correlate? will the second key map to the second value?
What is a solid, elegant, reusable piece of code for determining if an IEnumerable is empty, in .NET?
I'm trying to find the most reusable, yet elegant, piece of code possible for determining if an ienumerable. in the ideal, this should be a
Using Small (1-10 Items) Instance-Level Collections in Java
While creating classes in java i often find myself creating instance-level collections that i know ahead of time will be very small - less than 10
How to filter a Java Collection (based on predicate)?
I want to filter a java.util.collection based on a predicate.
What dotnet collection class's items can be enumerated in "addition order" and retrieved via a key?
I'm lead to believe that i cannot count on the order of items added to a dictionary for enumeration purposes. is there a class
Creating a constant Dictionary in C#
What is the most efficient way to create a constant (never changes at runtime) mapping of strings to
need an explanation for a beginner about exception in stream: IllegalStateException
Im a beginner in java programming and i just started streams. i have a problem with this code and i can't understand how to resolve it. i read few
Fastest way to find objects from a collection matched by condition on string member
Suppose i have a collection (be it an array, generic list, or whatever is the fastest solution to this problem) of a certain
Check if one List<String> contains specific string from another list
I have a list of emails of list<string> type, and another one of keywords also list<string>. each email
Replace the related model collection array with a new formatted one
I have an order, lamp and lamp_order table. currently i fetch the orders and it's lamp relationships. i
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How to sort items alphabetically after a group by in Laravel?
I have an eloquent query like this; $products = product::query() ->with('translation', 'category') ->get()
Laravel - propery does not exist on this collection instance
So i have a small laravel car project and i have two separate tables, cars table and vehicle_infos table. here is my
Why does Online Python Tutor present this immutable integer as two different integers graphically?
In fluent python, by luciano ramalho, chapter 8, copies are shallow by default, there is an example: >>> listone = [3,
Laravel filter and sort a collection based on conditions
I have a collection for example with these details: collect([ [ 'id'
Laravel access values from object in object
In one of the controller function $readings = reading::orderby('reading_date_time', 'desc')->get(); dd($readings);
laravel collection orderBy method with string value column type
I use bellow code for sorting some metas but the type of the column value is string so orderby method sort it like a string ( value = '22')
Group by one column and sum another column in a Laravel collection
I'm faily new to php & laravel, and i've been given this task: i have a collection that looks like the one below:
How to filter collection in laravel?
I return the exporttemplate model : $exporttemplates = exporttemplate::where('user_id', auth::id())->get();
laravel api resource collection with row query
$two = db::select("select ul.id , ul.name controller_name, ul.user_id controller_user_id,
Check if Laravel object has items
I have to ensure that i only display a foreach loop in blade - only if there are elements in my variable. so i need to check if my
how do you get back sum('amount') for a paginated eloquent query In laravel 5?
I have a model logbook for pilot and my controller return
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Merge a collection using the same key values
I have two collections with data to combine: //1 [ [ "date" => "2019-02-15", "clicks" => 1, ],
Laravel Collection - Remove Object containing empty array
I have an collection of objects - some of which contain empty arrays. object(illuminate\support\collection)#34225 (1) {
Group data in header collection view
How can i group my data received from firebase in header collection view? from firebase
filter() collection does not work in subquery
I am trying to get users which have addresses and the time of creation of that address should not be more than 7 days: $users =
When collection->map returnes array then data in Collection raise error
In laravel 6 app i have collection defined as : class permissioncollection extends resourcecollection { public static $wrap =
Flatten laravel relationship collection / array
I am having problem with array convert i went use laravel collection using map or php array array ( [0] => array (
How to control collection name of Mongodb on python, like put element of list to name of colletion using 'for'
I'm setting up database with different collection in mongodb, and only way to set the name of collection is ' collection = db.code ' i
Laravel class constructor must accept collection of models
Is there a way for a class constructor to validate that input parameter is a collection of certain objects? i know i can do:
How to fix user fetching from a collection in discord.js?
I'm trying to retrieve usernames from ids in collection (discord.js) i've tried fetching user with client.fetchuser(config.userid)
How to combine several iterators to one?
Can i return several iterators like one? for example in iterator() method maybe i can combine iterators like one?
SortBy nested non-comparable object with comparator
Suppose i have data class noncomparable(val a : any) //i.e. does not implement comparable data class wrappingelement(val nc :
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Adding and removing objects from a list in flutter
I have list of type dynamic called selectedlist, it should hold a list of objects. each objects consists of teacherid and subjectid, like this [
How to add dynamic value in Map in Dart?
I have a dynamic ui which maybe dropdown or textfield! i need to prepare map to send to backend. below is map format that i need to prepare
Find std::function by string key in unordered_map
This works: std::unordered_map<std::string, int> m = {}; auto c = m.find(typename); if
How do I change my data accessing way from data[key] to data->key in laravel collection?
I got a data structure like below that is created by laravel collection put() function. code: $array= collect();
Laravel remove index element from get collection
I pull in data from the database via ->get(); and want to remove a certain element based on a condition in a foreach loop so i would need
How can i merge items of a Laravel Collection based on keys?
I have a laravel collection with a lot of duplicated items like that: [ id: 'name1', prop1: 'yes', prop2: null, prop3:
Passing item in collection to variable
Total vba newbie alert! i'm a beginner to vba and i'm working with collections for the first time. i have a
Any reason C#'s List<T> Class, not having save or update method?
C#'s list<t> class
Laravel Resource Collection Rest Api Query Filter
I would like to add query params to my rest api. i created that in resource collections and now i cant find a way to add this functionality. every
laravel collection nested query
I'm new with laravel collection . i just want to make this query with collection db::select(select id, user_id,
Laravel - How to pluck a nested collection?
Ok, so i'm building a table that records time entries for each month of the year. i have a variable called $group_months, if i dump the data i get
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Get collection result from string located in array
To avoid multiples rows in my form, i attempt to get a collection result with key located in a raay but it doesn't work. is this possible ? how
laravel collection restructure to nested
I have query result wrapped to larave collection: [ [ 'group_id' => 1, 'value_id' => 1 ], [
Laravel - Calculating total time for multiple time-entries
I'm logging user time entries. my times migration looks like: schema::create('times', function (blueprint $table) {
How to get item from laravel eloquent collection by conditions?
I use laravel eloquent to get files of post that give me a collection but i want an item from that collection by
Checking if column is null Laravel
I have this column ('time_out') in a table of my database:
Implementing my own Exercising Helper App - Collections consideration
I'm trying to implement my own exercise app for using at the gym. i bumped into a doubts which collection will fit to me the most.
laravel collection merge didn't work as I expected
I have similar but slightly different eloquent model classes named exam, type, custom.
Sorting Strings that contains number in kotlin
I wanna sort some strings that contain numbers but after a sort, it becomes like this ["s1", "s10", "s11", ... ,"s2", "s21", "s22"].
Python set types to vectors without repetitions
I have k vectors and k types, where every vector is in the length n. n > k. i need to put the types in the vector such that for every
How can I rewrite/reformat an array?
I am developing an api but i am having a problem connecting it to a payment platform, because they ask for the preference with the following
Counter in pyspark to check array inside an array with duplicates
I have a dataframe df1 id transactions 1 [1, 3,3,3,2,5] 2 [1,2] root |-- id: int (nullable = true) |--
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How to convert a `List` to `Set` using literals
Final _set = [1, 1, 2, 3, 4].toset(); besides
How to remove item from laravel query result and get it?
In laravel project i am making a database query $addresses = db::table('residences')->where('user_id', '=',
Getting the right collection format from a JSON
Currently i get a json feedback from guzzle that i convert into collections so that it can be used in an @foreach via blade. the problem is that i
Laravel - where like returns all records
I am trying to do a search page and when my search form is empty i am getting all records from table instead of empty/null. my route:
Retrive model results ordered by SUM from relationship
Working with laravel eloquent i have two models users and usersocialmediachannels which have a 1 to many
Laravel - Counting a collection of models
I'm trying to get the count of different models and list them by company. i have a collection of different models. public
How return sublist of items in first list that not exist in second list?
Android 4.4 suppose i has 2 lists. i need to return sublist of items in first list that not contain in second list. e.g:
How to fix 'Object of class stdClass could not be converted to string' when using collection diff function
I'm having this problem when i try to use the function of collections diff on two collections that i've created from laravel db, they have the
Flutter Firebase Nested Collection help needed
I have created a firestore with nested collections, now i want to fetch data from it based on some conditions. i tried to create a
flutter and firebase and sub-collections
I've been searching high and low. hopefully someone can help! firestore setup: userscollection -> list of userids ->
What's the Equivalent of str_replace(array_keys([]), array_values([]), $subject); in Laravel Collection
Sometimes i use things like that in pure php $subject = 'this key1, that key2'; $replaces =
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How to set additive parameter to laravel collection map method
In my laravel 5.7 i try to remake a small piece of application using collection $selectedsubscriptions = [1,2,3];
Laravel - Shuffle Merge and Paginate Collection
I am struggling with a pretty difficult thing and hope you can help me out. right now i've got the following: $ads =
backbone looses context on fetch
I have a collection with a custom fetch function and a onfetchsuccess function. the onfetchsuccess function
How to elegantly customize the collection key name in laravel
for example, there is such a collection $phone_id = $request->get('q');
Laravel - Merged collection different from Eloquent collection?
I am facing a problem with sorting and returning merged collections. when i do: $ads =
Sorting nested ordered dictionary in Python
My original dictionary contains values of the form : [(0, {'t8': (0.3978349, 0), 't9': (0.84942997, 0), 't6': (1.1480641, 0),
How to access laravel collection in a foreach loop in blade template?
I want to get the user name details from the table users with the author ids from the table pages. for
How to allow duplicate values in Map java?
I am using autocompletetextview so i want duplicates names to display... the name is coming from server...i tried some sample of java code below
Getting all data in collection in Firestore on NodeJS
I'm currently starting to use firestore and am running in to some questions i cannot find the answer to. i have the following
Using duplicates method in Laravel collections
I have two collections and want to find the same or duplicated items inside two collections. my solution is first merging two collections and
laravel collections complex and/or Expressions
Trying to use and/or where statements as if they were nested in parentheses. example: select * from mytable where (id > 78
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How to have a collection in another collection?
I have a problem..in my program i need to have a collection of user, another collection in this with all projects where the user
Firebase search query returning empty result
I want to see if "chefid"(encircled field of screenshot) exist in any of the document in a "chefcollection" or not. for this
laravel eloquent collection orderby firstly null then filed value
I have $items with this illuminate\database\eloquent\collection instance. the result of
when i use where on json column on laravel return empty collection
When i use this code in laravel for json where $users =
How to get the common values from 2 Laravel collections
I have 2 collections in laravel, and i want only common values in my $result object. i see that
Get the collection item with the minimum and maximum value for each distinct item name in Laravel
I'm working on a small app using laravel 5.8 for a dog shelter. i have a query in my dog model which retrieves the dog breeds i'm
How to know if no more values are present in the array as you iterate the array in a loop
So, i have a locations table in database which contains the seller_id. many locations can have the same seller_id while
Loopback with meteor
We have a database connected to meteor and loopback services each one edits in the same collection in database. i found that meteor have
Difference between Laravel Collection methods has() and contains()
I'm having problems understanding the difference between the laravel collection methods has() and contains().
Slice of dictionary that is a result of collections.Counter
While i am trying to create a dictionary using dict(x), where x is a slice of another dictionary,d(y) where y is collections.counter() object.
Laravel Collection Filter - get value of filter
I've got this collection filter in blade template and i want to show only the value field. actually, i get the filtered array back.
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How to display data from a CloudFirestore sub-collection
I have a database created in cloudfirestore like so: collection 'users' document 'uid' (uid is the uid that gives you the authentication
How to fetch data from mongo db using get method in express js?
I have created two collections bear and bears in mongo db. i have defined bear collection in express code but it is accessing bears data. i am
How do I get the highest property from a laravel eloquent object
Consider the following model object: app\modules\charactersheets\models\charactersheet {#826 ... #attributes: array:39 [
Nodejs Mongo creating collection model with a list of object where these objects are list as well
I want to query mongodb to get all the cars that belong to the same company but i don't want to search the whole db and then
Laravel: convert multidimensional array to collection
In my project i have a dynamic form of the following structure: - date 1 - shift 1 - area 1 - cell 1 - cell 2
Laravel how to merge collections and arrays to json and separate them
I have 2 types collection and array i would like to merge correcly. instead of 1,2,3,4,5,6,7,8,9 i would like to have weeksummary(0-6) and
Group Collection by multiple column - Laravel
So, i have this collection in laravel : $collection = [ {oc: "3.01", c: "922.76", d: "0"}, {oc: "3.01", c: "0", d:
How to check an object has the type 'dict_items'?
In python 3, i need to test whether my variable has the type 'dict_items', so i tried something like that : >>>
java.lang.Long cannot be cast to java.lang.Integer
I want to read a map map from the database (firebase),and i compare it to another map motcle, if i find a duplicate key
Sequelize: Append key value to Javascript collection
Good morning everyone! i'm developing an application with node.js and angular, and i'm getting a little stuck lately. i need to
How to Define Relations and Get All Records with Relations in Laravel?
I want to define a relationship between tables, and i don't know where i'm going wrong. these are my tables:
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Add object to laravel collection at a specified location
I want to add a new object to a laravel collection in some specified location, can anyone help me achieve this ? for example:
Handling sorted and filtered collections coming from APIs in a redux store
Redux guidelines suggest to think at an app's
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