The difference between == and === in Swift is: Also, the == operator is overridable for custom types, meanwhile === is not. In this guide, you are going to take a look at what these differences mean and what gives rise to them in Swift. == Operator in Swift The double-equals operator (==) in Swift […]
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To convert an array to string in Swift, call Array.joined() function. For instance, let’s combine a list of names into a string that separates the names with a space: Output: 1. The Array.joined() Function in Swift The Array.joined() function in Swift can be called to create a string based on the elements of the array.
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In Swift, [weak self] creates a weak reference to self in a closure. This prevents memory leaks due to strong reference cycles. However, to truly understand what this means, you need to understand the following concepts: In this guide, you are going to take a thorough look at each of these concepts. Finally, you are
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In Python, you can use the in operator to check if a value exists in a group of values. For example: Similarly, you can check if a value is not in a collection with not in operation (combining the not operator and the in operator): The ‘in’ Operator in Python The in operator works with
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Regression testing is an essential aspect of software development, ensuring that new code changes do not adversely impact existing functionalities. When developers introduce new features or bug fixes, there is a possibility that these changes may unintentionally disrupt how the existing system operates. To mitigate this risk, teams employ regression testing to confirm that the
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In Python, the built-in list() function converts an iterable object, such as string or tuple, to a list. For example, let’s convert a string to a list of characters: In this guide, you are going to see examples of using the list() function and how to make a custom object support it. When Use list()
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To check if an element is in an array in Swift, use the Array.contains() function. For example, let’s check if the name “Alice” is in an array of names: Output: Let’s see a more advanced example. Check If an Array Contains an Object with Specific Property You can use the contains() function in a more
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To split a string to an array in Swift by a character, use the String.split(separator:) function. For example, let’s split a string by commas: Output: However, this requires that the separator is a singular character, not a string. To split a string to an array by a separator string, use String.components(separatedBy:) function. For example, let’s
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To get the length of a string in Swift, call the String.count property. For example: Output: Replace ‘count’ with ‘length’ in Swift Swift developers decided to call the length of a string ‘count’. However, if you prefer ‘length’ over ‘count’ you can change it by writing an extension to the String class. Naively, you could
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To check the Swift version of your current Xcode project: If you click the Swift version you are going to see other Swift versions in a dropdown. These are all the other supported Swift versions available for this project. How to Check the Swift Version Programmatically To programmatically find out the Swift version of your
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