Filter JavaScript objects the easy way with Arquero

There are many advantages to coding in JavaScript, but data wrangling probably isn’t near the top of that list. However, there’s good news for those who find JavaScript data wrangling a challenge: The same “grammar-of-data” ideas behind the hugely popular dplyr R package are also available in JavaScript, thanks to the Arquero library. Arquero, from … Read more

Using Rails Service Objects to Keep Code Clean | by Aleksandr Ulanov | Aug, 2022

In this article, we’ll find out what are Rails Service Objects and how you can use them to make your app cleaner and keep it maintainable. If you’re developing web apps using Ruby on Rails, you probably already know that Rails is an MVC (Model-View-Controller) framework, which means that you have your Models responsible for … Read more

Migrate Serialized Java Objects with XStream and XMT

Java serialization is convenient to store the state of Java objects. However, there are some drawbacks of serialized data: It is not human-readable. It is Java-specific and is not exchangeable with other programming languages. It is not migratable if fields of the associated Java class have been changed. These drawbacks make Java serialization not a … Read more

c# – Problem with loading related data in ef core using Ardalis Specification: List of objects evaluates to null

I’m new to ef core development and this looked at eShopOnWeb for guidance. I adapted many things and ended up with a somewhat working API, where I just can’t load related data. I have used Ardalis.Specification but ended up not being able to fix the issue. Originally I coded according to Ardalis and then adapted … Read more

javascript – How can I access and process nested objects, arrays, or JSON?

Preliminaries JavaScript has only one data type which can contain multiple values: Object. An Array is a special form of object. (Plain) Objects have the form {key: value, key: value, …} Arrays have the form [value, value, …] Both arrays and objects expose a key -> value structure. Keys in an array must be numeric, … Read more

python – How to remove dataframe rows with empty objects

Here is a way to do what your question asks based on the annotation column which contains values ‚Äč‚Äčthat look like lists but are actually strings: df = df[df.annotation.apply(eval).str.len() > 0] Column annotation from sample input (taken from df.head(15) in your question): annotation 0 [‘dad with recent heart attcak’] 1 [‘mom with “thyroid disease’] 2 … Read more

c# – Send objects to UserControl

I am trying to send objects to an UserControlbut I cannot figure what’s wrong? Here is my UserControl : namespace VSTEEL.UserControls { /// <summary> /// Interaction logic for UserControlListOperations.xaml /// </summary> public partial class UserControlListOperations : UserControl,INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public void NotifyPropertyChanged(string nomPropriete) { if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(nomPropriete)); } … Read more

python – How to manage the same frame like 2 different objects importing it from the same file

My goal is to have stored in file one “Frame_Model.py”, importing it from “Main_Manager.py” and to use it multiple times as many times I need and use they like different objects storing for eachone their own variables some shared and other not shared, without loosing it after self.Destroy(). The reason is because my “Main_Manager.py” is … Read more