Category "lambda"

How to write Repository method for .ThenInclude in EF Core 2

I'm trying to write a repository method for Entity Framework Core 2.0 that can handle returning child collections of properties using .ThenInclude, but I'm havi

Search an array list inside another array and return a new object combined

I am using typescript and I have two objects: export interface Module { moduleId: String name: String } export interface Model { id: number name

Java 8 optional: ifPresent return object orElseThrow exception

I'm trying to make something like this: private String getStringIfObjectIsPresent(Optional<Object> object){ object.ifPresent(() ->{

How to deploy multiple functions using serverless cli?

From the doc, I can deploy a function like this serverless deploy function -f functionName https://www.serverless.com/framework/docs/providers/aws/cli-refer

Conditional branches of a function raise false circle reference errors

I have a big function with lots of branches of IFS; each branch uses different references of the worksheet: MYFUN = LAMBDA(i, IFS( i = 1, // a formu

Simplifying code - perform mathematical operations based on operator

Here is the code for a calculator in Python: import time #Returns the sum of num1 and num2 def add(num1, num2): return num1 + num2 #Returns the difference

Added VPC endpoint but Lambda still timing out

Goal: Lambda function needs to retrieve RDS password from Secret Manager via VPC Endpoint (using AWS-SDK in Lambda). Problem: The Lambda function and RDS are i

coding reduceByKey(lambda) in map does'nt work pySpark

I can't understand why my code isn't working. The last line is the problem: import findspark findspark.init() from pyspark import SparkConf, SparkContext from p

What do the parenthesis following a lambda expression mean?

I am new to Python and I am wondering why this doesn't work for lambda: for person in people: print(lambda person:person.split()[0] + ' ' + person.split()[-

Why does it matter if I use a method reference or a lambda here?

When I try to compile this code import java.util.Optional; public class GenericTest { public static void main(String[] args) { Optional.empty().m

INDIRECT and OFFSET in the function body make a name special

I would like to write a user-defined function CHOOSERANGE that returns a range from 4 coordinates. The first version is as follows: CHOOSERANGE = LAMBDA(row_min

What's the VB.NET equivalent of async delegate in C#?

I'm trying to convert the following extension method (source) from C# to VB: public static Task ForEachAsync<T>(this IEnumerable<T> source,

error: no viable conversion from '(lambda at A.cpp:21:22)' to 'int'

What am I missing? Lambda declaration error. Marked in comment. void solve() { int charCount, time; cin>> charCount >> time; // Generat

Can Python pickle lambda functions?

I have read in a number of threads that Python pickle/cPickle cannot pickle lambda functions. However the following code works, using Python 2.7.6: import cPic

Define a lambda function with infinite number of arguments

Some Excel native functions like VSTACK permit of infinite number of arguments, and they have an intellisense as follows: I would like to know how to define su

Recursive LAMBDA to replace characters by specific substitutes from a lookup table

The goal is to iterate through rows of the character table and replace each character with it's substitute. The character table in this example is ={"&","&a

What is the purpose of std::function, and how to use it?

It is necessary to me to use std::function but I don't know what the following syntax means. std::function<void()> f_name = []() { FNAME(); }; What is

Is it possible to step through a row of data and sum every n-th cell using a Lambda function?

I have a model that produces an array of values that can be several hundred columns wide. Every 25th column contains a number that I need to add to the total. I

How do I use the new computeIfAbsent function?

I very much want to use Map.computeIfAbsent but it has been too long since lambdas in undergrad. Almost directly from the docs: it gives an example of the ol

Merge Map<String, List<String> Java 8 Stream

I would like to merge two Map with JAVA 8 Stream: Map<String, List<String>> mapGlobal = new HashMap<String, List<String>>(); Map<Str