Is it good practice to not filter values according to nullability?
Sometimes when I create an API that should enable getting a single value or all values I use the following pattern (passing NULL to the API, means get all rows):
Is it good practice to not filter values according to nullability?
Sometimes when I create an API that should enable getting a single value or all values I use the following pattern (passing NULL to the API, means get all rows):
Modeling value object when fields’ existence depends on state of other fields
I am practicing tactical DDD and having trouble as exemplified below. Fundamentally, whether some fields of the value object should be nullable depends on another field of the same value object. Consider the following value object and enum (C#):
Modeling value object when fields’ existence depends on state of other fields
I am practicing tactical DDD and having trouble as exemplified below. Fundamentally, whether some fields of the value object should be nullable depends on another field of the same value object. Consider the following value object and enum (C#):
How to avoid NullPointerException(NPE)
Since we all know that few couple days ago there was a global outage (BSOD) because of the CrowdStrike updated which caused that global outage and the reason behind that was just an NullPointerException.
Why am I seeing NaN in the coorelation matrix?
# Fill all types of missing values with zero first_chunk.replace(to_replace=[None, ‘None’, ‘none’, ‘Na’, ‘NA’, ‘na’, ‘N/A’, ‘n/a’, ”, ‘ ‘], value=0, inplace=True) first_chunk.fillna(0, inplace=True) The above three lines should have eliminated all the null, empty, or blank values from the dataframe. import pandas as pd from sklearn.model_selection import train_test_split from google.colab import drive drive.mount(‘/content/drive’) # […]
How to compare a column is not null in superset ( Metrics -> Custom SQL)?
I want to create a metric of Pivot 2: Actual/Target. But some Target is null. I wrote in Custom SQL as bellow but it not work. I changed to != Null or !=0, it still not work. Please help!
When i try to update value of the code if i leave this field null it encounter an error and program exit
When i choose update product and leave warrantyPeriod blank this error occur
Enter new warranty period (leave blank to keep unchanged):
Exception in thread “main” java.lang.NullPointerException: Cannot invoke “java.lang.Integer.intValue()” because “” is null
at com.mycompany.ecommerceapp.ECommerceApp.updateProduct(ECommerceApp.java:181)
at com.mycompany.ecommerceapp.ECommerceApp.main(ECommerceApp.java:33)
What are the disadvantages of self-encapsulation?
Direct references to variables severely limit the ability of programmers to refine existing classes. The programming conventions described here structure the use of variables to promote reusable designs. We encourage users of all object-oriented languages to follow these conventions. Additionally, we strongly urge designers of object-oriented languages to consider the effects of unrestricted variable references on reusability.
What are the disadvantages of self-encapsulation?
Direct references to variables severely limit the ability of programmers to refine existing classes. The programming conventions described here structure the use of variables to promote reusable designs. We encourage users of all object-oriented languages to follow these conventions. Additionally, we strongly urge designers of object-oriented languages to consider the effects of unrestricted variable references on reusability.