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Mastering Development

MongoDB .NET Driver not deserializing for collection

I’m having an issue with deserializing a collection from MongoDB. It seems fine for a single object but fails for a collection of objects. The collection is a GeoJSON object in Mongo with coordinates. That seems to be the problem. Perhaps I’m not representing that right in my C# class. Though it seems to work […]

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Mastering Development

How to write a loop for Two WAY Anova for Dataframe with different variables measured?

I have a long list of genes in working df, need to do 2WA for each gene. Would you have few minutes to help me to correct my script for 2 way ANOVA. Columns name as; Genotpye_Time_Replicate (e.g. X_T0_R1) (In my working data sets each, df I have ~50 Genes) Sample Data df1 <- structure(list(Gene […]

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Development

Pass property name as parameter

I have the following class public class School { public List<Student> Students { get; set; } public List<Teacher> Teachers { get; set; } } Now i have this method public bool Evaluate(??) { var school = DbContext.Schools.FirstOrDefault(); return school.??.Any(/*some expresions*/) } I should be able to pass a value in ?? and use it so […]

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Development

Using classes to print out instance attributes based on user input in Python

I am new to programming and would like to practice by creating a small app, using Python. The app asks the user to enter a level and a term and the app will return the curriculum for the said level and term. I have tried before without using classes and only using nested dictionaries but […]

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Development

Why is Eunit insisting my function is returning {ok, value} when it’s not?

I’m doing something very simple: Reversing a list in Erlang without using BIFs. Here’s my attempt: %% —————————————————————————– %% Reverses the specified list. %% reverse(List) where: %% * List:list() is the list to be reversed. %% Returns: A new List with the order of its elements reversed. %% —————————————————————————– reverse(List) -> reverse2(List, []). %% —————————————————————————– […]

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Development

RuntimeError: You should not call `__bool__` / `__nonzero__` on `Formula`,

I was trying to write a least time control code, using drake toolbox. But in the middle, I cannot understand the error info: (please ignore things happened in this parentheis, i just don’t know how much detail is needed to submit the post, god!) ”’python from pydrake.all import MathematicalProgram, Solve import numpy as np def […]

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Development

This procedure (elementSeparator) is giving a type error in ReasonML

This code: let initialRows = 5; let initialCols = 7; /* Player 1 is P1, Player 2 is P2 */ type whichPlayer = | P1 | P2; /* Either Player 1 or Player 2 has won the game, it is a draw, or it is ongoing where either it is Player 1’s turn or Player […]

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Development

Projection query with MongDb using Expression is not working with C#

I’m working on application that uses MongoDb as the database and .Net Core 3.0 as the framework. To fetch the data from the database, I have created a DbContext class and using the ‘Projection’ feature of MongoDb. I’m not able to pass the appropriate projection. Following is the code for DbContext.cs using System; using System.Collections.Generic; […]

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Development HTTP

Resolve Models Dynamically From HttpContext

I’m looking for a way to resolve a model from the HttpContext, given a parameter name that will always be resolved from query string How can I dynamically register filters from the startup. I have a class which is going to handle registering my filters. public void AddFilter<T1>(string filterName, Func<T1, Expression<Func<TEntity, bool>>> filterResolver, string param1Name […]

Categories
Development HTTP

Resolve Models Dynamically From HttpContext

I’m looking for a way to resolve a model from the HttpContext, given a parameter name and that I’ll always be resolving from query string I’m trying to dynamically register filters from the startup. I have a class which is going to handle registering my filters. public void AddFilter<T1>(string filterName, Func<T1, Expression<Func<TEntity, bool>>> filterResolver, string […]