Category "null"

TypeError: Cannot destructure property 'image' of 'product' as it is null

I am unsure why I have this error. Could you please take a look and advise? import React from 'react'; import { client, urlFor } from '../../lib/client'; const

returning null value when flutter http get request(Instances of _<Future> dynamic)

i am trying to get a data from a flask rest api but it keeps returning null value when it converted toString() it displays "Instances of _ dynamic" getPass() as

if itemcontainerstyle is inside DataTemplate and a call the the main window is used an System.NullReferenceExc on start-up but works fine if ignored

when i try to call a event from the main wind if a control is in a template in itemcontainerstyle when the run a System.NullReferenceException: 'Object referenc

mysql null value case when is null does not work

I have following query to handle null value and flag those based on two table join however c.pure_proc_flag is null then 0 else 1 does not provide the result

Eliminating NULL Values in SQL

I have a complex subquery within a query giving me this: Col 1 Col 2 value1 NULL NULL value2 value3 NULL NULL value4 value5 value5 But instead, I need this ou

When to use let/run/apply/with/also when an object is null?

I want to run a block of code depending if the variable is null or not, but I still don't know when to use let,run...etc. I want something like this: myVar?.xxx

What is a NullReferenceException, and how do I fix it?

I have some code and when it executes, it throws a NullReferenceException, saying: Object reference not set to an instance of an object.

Null check operator used on a nullsis value flutter

I have problem with null check operator and i using firebase firestore or json model And i using the method to get data user from model But while i return he gi

Android Studio Kotlin app "keeps stopping" when I run it

I am just trying to set up a spinner configured as a dropdown menu, but I can't even test my app to see if it works because every time I run it, it immediately

Closure call with mismatched arguments: function '_TaskTileState.checkboxCallback'

I'm getting this error in my code ======== Exception caught by widgets library ======================================================= The following NoSuchMetho

AWS Athena/Presto SQL: Having trouble getting null values

I am doing a query in aws Athena where I want to get some total values, however I am having issues getting a column where the values are null, this column somet

Make String.format("%s", arg) display null-valued arguments differently from "null"

Consider the custom toString() implementation of a bean: @Override public String toString() { String.format("this is %s", this.someField); } This yields

(FLUTTER) --- RangeError (index): Invalid value: Valid value range is empty: 0

Row( mainAxisAlignment: MainAxisAlignment.center, children: [ Padding( padding: const EdgeInsets.all(8.0), child: Icon( password[0] == null ? unchangedPassword

Is it necessary to use null two times at the end of the code?

I have one question. Help me, please. I have code in my teaching proggram: alert(user.address ? user.address.street ? user.address.street.name : null : null);

Unable to determine what type of blank, null, na or anything else in R dataframe

I have a data frame loaded from an Excel csv. One columns has many "NULL". This is what is showing up when looking at the data in RStudio. When I filter in the

How do i join on null in two table in sql? inner join, left,right,full n cross join -- Interview Question Tech Mahindra

Create table TechM ( id int ) ; select * from TechM insert into TechM values (1), (1), (1), (2), (3), (null) ; Create table TechN ( id int ) ; select * from Tec

SQL Server - NULL vs blank in IF condition - ISNULL vs COALESCE

I am expecting ELSE part to be printed in this case. But it doesn't. It works if the input is blank ''. But for null, it fails. Even with ISNULL and COALESCE, i

SQL Server: Limit filling NULL values up to row with specific text

I have a CTE on which i am filling null values with the previous value before row 100 available by using the following script SELECT [YearMonth],grp, CASE WHEN

How to write code to catch null exception in python

I have below code, which I want to write in a way so that it catches proper exception when none is passed when argument value is required. def MyFunction(MyAr

SELECT * FROM `Languages` WHERE `Google` IS NOT NULL; returns NULL values?

In my mariadb database this query: SELECT * FROM `Languages` WHERE `Google` IS NOT NULL; Returns rows where column "Google" is NULL, which it shouldn´t. A

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