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# How to use the iszero method in Julia

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### Overview

The iszero(x) method can be used to check if the given value is Not a Numberequal to zero or not.

### Syntax

iszero(x) -> Bool
Julia iszero function Syntax

### Parameter

This method takes the parameter, x, which represents the value that is to be checked. The argument can be a numeric value or an array.

### Return value

This method returns true if the provided value is equal to 0. Otherwise, false is returned.

### Code

The code below demonstrates how to use the iszero method.

## find iszero of 0
println( "iszero(0) => $(isone(0))") # returns true ## find iszero of 0.0 println( "iszero(0.0) =>$(iszero(0.0))")   # returns true

## find iszero of [0, false]]
println( "iszero([0, false]]) => $(iszero([0, false]))") # returns true ## find iszero of [0, true] println( "iszero([0, true]) =>$(iszero([0, true]))")   # returns false
Using the iszero method

### Explanation

In the code above, we do the following:

• Line 2: We use the iszero method with (0) as an argument. The iszero(0) will return true.
• Line 5: We use the iszero method with (0.0) as an argument. The iszero(0.0) will return true.
• Line 8: We use the iszero method with an array ([0,false]) as an argument. All the values in the array are evaluated to 0 so true  is returned.
• Line 11: We use the iszero method with an array ([0,true]) as an argument. The true element in the array will be not equal to 0 on converting to a numeric value. So the iszero method returns false as a result.

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