equals Archives - IT Nursery

Difference between null and empty (“”) Java String

What is the difference between null and the “” (empty string)? I have written some simple code: String a = “”; String b … Read more

BigDecimal equals() versus compareTo()

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Consider the simple test class: import java.math.BigDecimal; /** * @author The Elite Gentleman * */ public class Main { /** * @param args … Read more

Any reason to prefer getClass() over instanceof when generating .equals()?

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I’m using Eclipse to generate .equals() and .hashCode(), and there is an option labeled “Use ‘instanceof’ to compare types”. The default is for … Read more

What’s the difference between IEquatable and just overriding Object.Equals()?

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I want my Food class to be able to test whenever it is equal to another instance of Food. I will later use … Read more

Check if bash variable equals 0 [duplicate]

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This question already has answers here: How can I compare numbers in Bash? (9 answers) Closed 3 years ago. I have a bash … Read more

Best implementation for hashCode method for a collection

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How do we decide on the best implementation of hashCode() method for a collection (assuming that equals method has been overridden correctly) ? … Read more

Equals(=) vs. LIKE

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When using SQL, are there any benefits of using = in a WHERE clause instead of LIKE? Without any special operators, LIKE and … Read more

Why would you use String.Equals over ==? [duplicate]

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This question already has answers here: C# difference between == and Equals() (19 answers) Closed 8 years ago. The community reviewed whether to … Read more

Comparing two strings, ignoring case in C# [duplicate]

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This question already has an answer here: What is difference between different string compare methods [duplicate] (1 answer) Closed 2 years ago. Which … Read more