add on.exit expr to parent call?

Is it possible to add an on.exit expr to the parent call? If so, how? For example, say that parentOnExit(expr) is a function implementing this. Then for the following code: f <- function() { ...

What does a function without body mean?

I'm reading the code that package time, and then I want to know how the func After(d Duration) <-chan Time works. I found the code follows: func After(d Duration) <-chan Time { return...

Setting up Cup/JLex parsing properly

I have a very basic lexer here: import java_cup.runtime.*; import java.io.IOException; %% %class AnalyzerLex %function next_token %type java_cup.runtime.Symbol %unicode //%line //%column //...

What, if anything, do you need to add to a dependent type system to get a module system?

Dependent type systems seem to support some of the uses of a ML module system. What do you get out of a module system that you do not get out of dependent records? module ~ record signature ~...

Symfony " 'use' statement for another namespace?" issue

I have a problem with namespaces in connecting my entity class to an abstract-type class. I needed to create an AbstractType Class I called BlogFactory. I intent to use it in my the createAction...

Java: Simple HTTP Server application that responds in JSON

I want to create a very simple HTTP server application in Java. For example, if I run the server on localhost in port 8080, and I make to following call from my browser, I want to get a Json array...

Check if variable been initialized in PHP

I have been implementing a Wordpress plugin and I faced a problem with finding out if a variable has been declared or not. Let's say I have a model named Hello; this model has 2 variables as...

Remove value from object without mutation

What's a good and short way to remove a value from an object at a specific key without mutating the original object? I'd like to do something like: let o = {firstname: 'Jane', lastname:...

Magento 2 custom payment method is not showing in front end

I have tried to create new payment method in magento2, when i tried to configure it is coming in the backend, but not in the front end. If anyone fixed this issue please let me know the fixes, i...

Why does C++ support for a pure virtual function with an implementation?

I did a simple test today: struct C{virtual void f()=0;}; void C::f(){printf("weird\n");} The program is OK, but is weird to me, when we use =0 it means the function body should be defined in...

How to map over arbitrary Iterables?

I wrote a reduce function for Iterables and now I want to derive a generic map that can map over arbitrary Iterables. However, I have encountered an issue: Since Iterables abstract the data...

Perhaps the weirdest EXC_BAD_ACCESS I've seen Swift generate

I have a set of classes forming a decorator pattern so that I can do some layered caching. I have an abstract class which provides the core processing of images and contains a number of...

Type casting within a template in Angular 2

I'm working on an Angular project (Angular 4.0.0) and I'm having trouble binding a property of an abstract class to ngModel because I first need to cast it as the concrete class it actually is in...

How to set custom response for selected Request class in Laravel 5.5

I'm trying to use Laravel validation to generate custom error message, however I'm unable to find the function I should be overriding. Route: POST:/entries/ uses [email protected] which uses...

Handle properties in onCreate() Kotlin

I have the need of creating an object as a property in my Kotlin class like this in Java: class MyActivity extends AppCompatActivity{ private Dialog myDialog; //... After the application...

Magento 2 custom address attribute not loading in address book in checkout page

I created a Magento Module to 2.2.4 and 2.2.3 version that add a custom attribute in Shipping Address and Customer Address. The attribute works fine when new address is created in checkout page...

How to keep InputField keyboard open when focus is lost?

I'm making a typing game where the user types in words that fall down the screen, and I have buttons at the top that act as powerups (nuke, freeze, etc...) when the user presses them. Now, when...

How can I pass a method of an object's class as std::function?

I have a function that needs to get std::function-type parameter. I also have an abstract-type pointer to an object. Is it possible to pass the method using only an object? The function...

cargo run does not reflect any code changes in main.rs

cargo run or cargo rebuild ignore any code changes. I have a program fn main() { println!("Hello, World!"); } Then I do cargo run and see: Compiling myproject v0.1.0...

create an instance of the abstract class DomSanitizer

in an Angular component we can inject DomSanitizer and use it. @component({..}) export class myComponent{ constructor(private sanitizer: DomSanitizer){ //now we can use...

Issue testing an Angular service with abstract class dependencies

I have a service, which requires a dependency to another service, which in turns requires dependencies on two abstract classes. (ThemeConfigService -> (SettingsService -> SettingsLoader,...

When should one use a Kleisli?

I recently stumbled on the concept of a Kleisli and every tutorial/link/reference that I read motivates the use of Kleisli via the following constructs: Composing functions that return monads: f:...

Angular Circular Dependencies with Dynamic Nested Components

I have looked all over the internet for a resolution to this to no avail (different cases etc.) so please forgive the code dump below, the problem I am having is to do with circular dependencies....

Bootstrap Datatables Javascript - Lengthmenu and export buttons too smooshed against each other - want to create line break between the two

I have a searchable table I'm developing where users need to be able to export their results, but also select the number of results they see. The problem is that everything looks too crammed...

Solving the Kempner Function in Python - why is this concurrent function continuing after the base case is reached?

I've been doing Python puzzles and one I have been doing is using a concurrent function to solve the Kempner Function in Python. The Kempner Function, applied to a composite number, permits to...

Cannot use data from GraphQl query after getting data using Flutter and Ferry

I currently have a function in a bloc which is calling my repository to grab data from my server using GraphQL. I am able to get the data back. However I am not able to return it to my bloc as the...

How to use PagingSource and Room with fields annotated by Embedded

I want to use Paging 3 Library for pagination with db as SSO and I have some data classes which use Embedded annotation (one to many, relation) sample ↓ data class PojoEmbended( @Embedded ...

Web3-react Error Module parse failed: Unexpected token You may need an appropriate loader to handle this file type. web3-react/walletconnect

When I try to integrate web2-react/walletconnect-connector with web3-react using web3-react/core. Other wallets like portis, metamask, fortmatic and few other are working properly but when I use...

How to get next Page of ADF Pipeline run details using continuation_token in Azure Data Factory - Databricks?

I am using adf_client.pipeline_runs.query_by_factory(resourceGroupName, factoryName, filter_parameters) method of azure.mgmt.datafactory.DataFactoryManagementClient package to fetch ADF Pipeline...

Not sure how to convert a Cursor to this method's return type after Kotlin update to 1.6.0

I was using Android Room library in my project to manipulate data from my SQLite database and everything was working fine in previous Kotlin version (1.5.31). Here is a sample of my...