Artturi Jalli

I'm an entrepreneur and a blogger from Finland. My goal is to make coding and tech easier for you with comprehensive guides and reviews.

Python Tuple Comprehension: Step-by-Step Guide (Examples)

In Python, there’s no tuple comprehension. However, you can mimic the tuple comprehensions by running a generator expression inside tuple() function call. For example: This guide teaches you how to mimic the behavior of tuple comprehensions by using generator expressions inside the tuple() function. You will learn what is a generator expression and how the …

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JavaScript How to Find Duplicates in Array (without Removing)

To find (and not delete) duplicates in a JavaScript array, you can use this function: Example use: Output: To learn how the above approach works, and what alternatives exist, please keep on reading. This guide shows you ways to find array duplicates and show them instead of deleting them. Besides, you will learn what performance …

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Python Increment Operator (++) and Decrement Operator (–)

Python does not have traditional increment and decrement operators, like ++ or –. Instead, Python uses augmented assignment operators, which combine the assignment operator (=) with a mathematical operation, such as addition (+=) or subtraction (-=). For example, to increment a variable x by 1, you can use the augmented assignment operator x += 1 …

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Python ‘if…else’ in a List Comprehension (Examples)

You can place an if…else statement into a list comprehension in Python. For example: Notice that the if…else statement in the above expression is not traditional if…else statement, though. Instead, it’s a ternary conditional operator, also known as the one-line if-else statement in Python. Example Given a list of numbers, let’s construct a list of …

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Python dict.get(‘key’) vs dict[‘key’] — Don’t Use Square Brackets

In Python, a dictionary is a collection of key-value pairs. Both dictionary.get(‘key’) and dictionary[‘key’] are used to retrieve the value associated with a given key in a dictionary. However, there is a clear difference between the two: To put it short, dictionary.get(‘key’) is the safer way to get value from a dictionary. You shouldn’t use …

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