syntax Archives - Page 2 of 15

objective-c, Programming

IT Nursery

What do the plus and minus signs mean in Objective-C next to a method?

In Objective-C, I would like to know what the + and - signs next to a method definition mean. - (void)loadPluginsAtPath:(NSString*)pluginPath errors:(NSArray **)errors; ...

June 2, 2022
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Java, Programming

IT Nursery

Null check in an enhanced for loop

What is the best way to guard against null in a for loop in Java? This seems ugly : if (someList != null) ...

June 1, 2022
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Programming, sql-server

IT Nursery

What is the use of the square brackets [] in sql statements?

I’ve noticed that Visual Studio 2008 is placing square brackets around column names in sql. Do the brackets offer any advantage? When I ...

May 31, 2022
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PHP, Programming

IT Nursery

What is the meaning of three dots (…) in PHP?

While I am installing Magento 2 on my Server, I got an error. After investigating the code and found that there is are ...

May 30, 2022
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Programming, Python

IT Nursery

Extracting specific columns in numpy array

This is an easy question but say I have an MxN matrix. All I want to do is extract specific columns and store ...

May 30, 2022
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C, Programming

IT Nursery

Effects of the extern keyword on C functions

In C, I did not notice any effect of the extern keyword used before function declaration. At first, I thought that when defining ...

May 30, 2022
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C#, Programming

IT Nursery

C# binary literals

Is there a way to write binary literals in C#, like prefixing hexadecimal with 0x? 0b doesn’t work. If not, what is an ...

May 29, 2022
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javascript, Programming

IT Nursery

javascript function leading bang ! syntax

I’ve been seeing this syntax on a few libraries now and I’m wondering what the benefit is. (note i’m well aware of closures ...

May 29, 2022
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C#, Programming

IT Nursery

C# – Keyword usage virtual+override vs. new

What are differences between declaring a method in a base type “virtual” and then overriding it in a child type using the “override” ...

May 27, 2022
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PHP, Programming

IT Nursery

What does ‘

<?php $a=1; ?> <?=$a;?> What does <?= mean exactly? 8 Answers 8

May 27, 2022
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