In Modern C++, we can create unique_ptr object to manage dynamically allocated arrays. However, the syntax for using std::unique_ptr with arrays is a bit different. In this article, we will look into this in more detail. Syntax to use unique_ptr with Arrays When you want a create a unique_ptr object to manage a dynamically allocated […]
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In this article, we will discuss about the make_unique<>() in C++ and what are its advantages. In the modern C++, memory management has been made significantly easier and safer through smart pointers. The std::make_unique<T>() is a utility function introduced in C++14. It lets the C++ runtime system handle memory allocation without the programmer needing to
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This tutorial will discuss about a unique way to check if a string contains special characters in php. We can use the regular expression to check if string contains any special character in PHP. The regex pattern ‘/[^a-zA-Z0-9\s]/’ matches a string that contains at least a character which is not a letter or number or
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This tutorial will discuss about a unique way to check if array contains a specific string in C++. Suppose we have a string array, and a string value. Like this, Now, we want to check if this string array arr contains a specific string strvalue or not. For that we are going to use STL
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Sometimes it is very useful to alert the user to press any key before proceeding ahead in the program. In this Python tutorial, we will discuss how to make a python script wait for a pressed key? Table Of Contents Method 1 : Using the input() prompt Method 2 : Using the Keyboard package Method
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This article will discuss four ways to count the number of rows in a pandas dataframe in Python. Table of Contents: Get total number of rows using len() function with Dataframe.Index. Get total number of rows using shape property. Get total number of rows using size property. Get total number of rows using len() on
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This article will discuss how to get a list of all supported timezone names in the pytz module. pytz is a module in python, which supports all the time zones. It helps in all datetime calculations, where time zones are involved. In various functions of this module, we need to pass the timezone string. But
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While working with different languages and operating systems, we often encounter general questions on \r and \n and their difference. In this article, let’s discuss what \r and \n and \n\r combined are. Differentiate between \r and \n and \n\r \n stands for new-line – \n will move the cursor down to a new line
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This article will discuss how we can convert the datetime module’s timedelta object to total seconds in python. A little insight about the problem in hand, In the datetime module, the datetime.timedelta represents the difference between two dates, time, or datetime objects. For example, we have two timestamps as datetime objects, If you want the
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