null Archives - IT Nursery

I have made a small xslt file to create an html output called weather.xsl with code as follows:  <xsl:stylesheet version="1.0" ...

June 1, 2022
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go, Programming

IT Nursery

nil detection in Go

I see a lot of code in Go to detect nil, like this: if err != nil { // handle the error } ...

June 1, 2022
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C++, Programming

IT Nursery

Do you use NULL or 0 (zero) for pointers in C++?

In the early days of C++ when it was bolted on top of C, you could not use NULL as it was defined ...

May 31, 2022
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android, Programming

IT Nursery

getActivity() returns null in Fragment function

I have a fragment (F1) with a public method like this public void asd() { if (getActivity() == null) { Log.d("yes","it is null"); ...

May 30, 2022
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MySQL, Programming

IT Nursery

MySQL CONCAT returns NULL if any field contain NULL

I have following data in my table “devices” affiliate_name affiliate_location model ip os_type os_version cs1 inter Dell 10.125.103.25 Linux Fedora cs2 inter Dell ...

May 28, 2022
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C#, Programming

IT Nursery

How to set enum to null

I have an enum string name; public enum Color { Red, Green, Yellow } How to set it to NULL on load. name ...

May 27, 2022
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Programming, sql

IT Nursery

Select rows which are not present in other table

I’ve got two postgresql tables: table name column names ----------- ------------------------ login_log ip | etc. ip_location ip | location | hostname | etc. ...

May 27, 2022
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Java, Programming

IT Nursery

Filter values only if not null using lambda in Java8

I have a list of objects say car. I want to filter this list based on some parameter using Java 8. But if ...

May 27, 2022
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