Q&A Discussions

How do I stop calling a function when it returns NULL pointer? [C]

13th Jan 2020, 4:22 PM

Yaro Ka Yar

c functions memory null pointers

1 Vote

Can l Comparison the int withe NULL

1st Jan 2020, 11:23 PM

ja008

0 Votes

Why is document.body null? Javascript

31st Dec 2019, 11:15 AM

mar ia

appendchild body button document.body html javascript null

1 Vote

4th Dec 2019, 10:07 PM

JJ McSquiggles

NULL vs 0

0 c++null variables

1 Vote

How to insert blank value not NULL using mysql query

4th Dec 2019, 3:36 PM

OnesAndZeroes10

insert into

2 Votes

Null is an character then why not if part is evaluated here??

3rd Dec 2019, 3:08 PM

Narendra Kumar

c code

2 Votes

How to access the pointer to the character array?? What is the expected output ?

15th Nov 2019, 10:50 AM

Preity

arrays c c++dynamic memory null pointers

0 Votes

update a data in mysql, adding data to a null column of an existing row. is it possible?

8th Nov 2019, 9:10 PM

Puneet Goel

c#mysql sql

0 Votes

Difference between NULL and null in programming?

6th Oct 2019, 2:58 AM

zekrom

c++coding java programming

2 Votes

I want tolowercase() to convert values and also ignore null values in a list. What to do ?

30th Sep 2019, 7:25 AM

Piyush Srivastava

0 Votes

I have a table consisting of datas where some are null.I want to use search filter but tolowercase error occurs beacuse of null

19th Sep 2019, 9:23 AM

Yasik Raam

0 Votes

What is the Difference between Null and Void ?

19th Sep 2019, 9:11 AM

Yasik Raam

data-types datastructures

0 Votes

Why do we have to add Null here?

13th Sep 2019, 8:20 AM

Nachiket Gohil

rest-parameters

1 Vote

8th Sep 2019, 8:41 PM

Alexander Schröder

Null to not null

sql

0 Votes

[Solved]Why output of this two code is different?

3rd Sep 2019, 7:50 AM

Fareedoon Khan

attributes java null string variable

1 Vote

Why "typeOf null is object? TypeOf NaN is number and NaN==NaN is false?

25th Aug 2019, 11:50 AM

Amir01

nan null

6 Votes

Avoid smart cast hint in null checks

22nd Aug 2019, 2:03 AM

Kensy Master Will

Code not Working Why? JS

cannot null of property set style

0 Votes

5 Answers

17th Aug 2019, 8:58 AM

MightyJohn

kotlin

1 Vote

Doing somethig else and returning if null in one expression

13th Jul 2019, 9:58 PM

Chriptus13

kotlin smartcast

0 Votes

In creat table statment how one can define a variable as unique and not null as well in sql

13th Jul 2019, 9:27 PM

Chriptus13

mysql sql

0 Votes

Does a unique constraint allows a null value to be inserted once? Or the Check constraint

5th Jul 2019, 9:40 AM

priya

null

1 Vote

Why mentioning NOT NULL while applying PRIMARY KEY constraint?

26th Jun 2019, 7:31 PM

mvtin

tables

1 Vote

Why is null instanceof Object false?

23rd Jun 2019, 3:45 PM

Yasser AKBBACH

false instanceof javascript js null object

13 Votes

Why is this element null?

25th May 2019, 10:01 AM

Sarthak Pokhrel

javascript null

1 Vote

[Python] How should I do?

22nd May 2019, 12:53 AM

Archie

coding error file files null nulls program python save saveas

1 Vote

18th May 2019, 1:39 PM

Alfarrel

JS error to fix ...

error javascript null var

5 Votes

What is the diffrence (in examples) between undefined, null, NaN ?

25th Apr 2019, 1:29 PM

Jess

difrence nan null undefined

22 Votes

10 Answers

24th Apr 2019, 6:33 PM

Sławek J.

Y the Results is null ?

es javascript jquery js

0 Votes

I am trying to select HTML elements using document.getElementById method but it keep showing null reference. how to fix it?

23rd Apr 2019, 7:18 PM

Omar Khalil Bakhsh

web

0 Votes

Multiple Null Characters in String Literal

11th Apr 2019, 12:56 PM

Vivek

\0 c++null string

5 Votes

13 Answers

8th Apr 2019, 5:45 AM

Fermi

Why type of null is object??

javascript null object typeof

7 Votes

When i am using name-it is escaping and it dispalys null pointer assignment??

8th Apr 2019, 5:14 AM

Ayan Fox

input output

1 Vote

What difference between two statement in my code?

2nd Apr 2019, 1:42 PM

Teja

arrays java null objects oop

2 Votes

Null in arraylists>object data

31st Mar 2019, 9:23 AM

shreyash joshi

arraylist behindthescene java

11 Votes

How to check null value?[SOLVED]

26th Mar 2019, 1:38 PM

Saksham Jain

checker js null

3 Votes

What is the solution for, cannot read property 'getcontext' of null canvas

21st Mar 2019, 9:50 AM

Sarthak Gupta

canvas html javascript

0 Votes

Below is my simple tic tac toe game. I have a problem in single player mode an error shown up as unable to set innerHTML of null

18th Mar 2019, 8:16 PM

Lweendela Kankoloto

html5 javascript

3 Votes

What is the difference between null and empty?

13th Mar 2019, 5:55 PM

viknesh vikky

empty java keyword null

0 Votes

How are NULL and '\0' defined in C?

7th Mar 2019, 6:47 AM

Tarika

0 c null

7 Votes

The NULL is object or primitive?

6th Mar 2019, 9:15 AM

Abhishek Tandon

1 Vote

Uncaught Type error: Cannot read property 'addEventListener' of null

10th Feb 2019, 9:48 AM

Hossam Hassan

1 Vote

2nd Feb 2019, 9:20 AM

Alexis

Regarding Null Character

nullcharacter

0 Votes

Void pointer vs NULL pointer

23rd Jan 2019, 3:18 PM

Manohar Varma

c null pointer void

3 Votes

7 Answers

10th Jan 2019, 2:15 PM

Ashish B

When declaring a pointer to a variable, do we need to initialize to NULL all the time? Why?

c null pointer

1 Vote

"<div class="img"></div> " won't show when scrolling. I have this error: Cannot read property 'classList' of null

30th Dec 2018, 8:46 AM

Konybud

#window.onscroll functions

3 Votes

Please what can be the problems my code it keeps giving me can't set property of 'className' null

21st Dec 2018, 10:49 PM

noUseForAName

1 Vote

[SOLVED] GetElementId Returning null

20th Dec 2018, 5:47 AM

Reward

getelementid html javascript onload slider sololearn window

3 Votes

JS help needed. Can not read value of null

18th Dec 2018, 1:11 AM

Nic Robichaud

beginner javascript

0 Votes

Why when using instanceof in java to a null variable the output would be flase

17th Dec 2018, 5:37 AM

Webnell

instanceof java

0 Votes