When working with collections in Dart, you might often find yourself needing to merge or copy multiple lists, sets, or maps. Traditionally, this can require a fair bit of manual iteration and code. However, Dart provides a simple and elegant solution to this problem with the spread operator (…). The spread operator allows you to […]
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In Dart, you can use the for keyword inside collections like Lists, Sets, and Maps to efficiently manipulate, transform, and filter data. This powerful feature allows you to generate new collections by applying rules and conditions to existing data, all within the same collection declaration. Think of it like going through a list of tasks
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In Dart, the collection if is a smart and simple way to add items to a list, set, or map only when a condition is true. Instead of writing extra if statements outside a collection, Dart lets you place conditions directly inside the collection itself. This makes your code shorter and easier to understand. Let’s
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In Dart, a late variable is one that you declare now but plan to fill in later. Instead of giving it a value right away, you’re saying, “I’ll set this up before I use it.” This is helpful when you want to delay the work of creating a value until the moment you actually need
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In JavaScript, splitting a string means breaking it into smaller parts, typically based on a delimiter such as spaces, commas, or any other character. This allows you to work with individual pieces of the string, which can be useful for processing or extracting data. For example, you can split a sentence into an array of
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List concatenation is the process of combining two or more lists into one. It’s a common task when working with data in Python, allowing you to merge related items or extend a list with more elements. You might want to concatenate lists when: List concatenation makes it easy to work with large sets of data
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List comprehension is a quick way to create a new list by looping through an existing one in a single line of code. Instead of writing several lines with a for loop and append(), list comprehension lets you do it all in one go. It’s useful when you want to build a list from another
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In Python, a raw string is a special kind of string where backslashes (\) are treated like normal characters, not as escape codes. Usually in Python, \n means a new line, \t means a tab, and so on. But in a raw string, these are not turned into special characters—they stay exactly as you write
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In Python, working with strings often involves checking whether they are in uppercase or lowercase. This is useful in a variety of scenarios, such as validating user input, formatting text, or making decisions based on the case of characters in a string. Python makes it simple to check if a string is entirely uppercase or
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In Python, strings are one of the most commonly used data types. A substring is simply a part of a string. Think of it like extracting a slice of a cake—you’re not taking the whole cake, just a portion of it. Substrings are essential when you need to work with specific parts of a string,
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