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Articles by Ankith Reddy
Page 2 of 73
How to find time difference using Python?
Finding time differences in Python is straightforward using the datetime module and timedelta objects. A timedelta represents a duration — the difference between two dates or times. Understanding timedelta The timedelta constructor accepts various time units as optional parameters ? import datetime # Creating a timedelta object delta = datetime.timedelta(days=7, hours=2, minutes=30, seconds=45) print(f"Duration: {delta}") print(f"Total seconds: {delta.total_seconds()}") Duration: 7 days, 2:30:45 Total seconds: 612645.0 Subtracting Time from Current Date You can subtract a timedelta from a datetime to get an earlier time ? import datetime ...
Read MoreHow to search Python dictionary for matching key?
When working with Python dictionaries, you often need to search for keys in different ways. You can search for exact keys or find keys that match certain patterns or contain substrings. Searching for Exact Keys If you have the exact key you want to find, you can use the [] operator or get() method to retrieve the value associated with this key ? student_grades = { 'alice': 85, 'bob': 92, 'charlie': 78 } # Using [] operator print(student_grades['alice']) # Using get() method ...
Read MoreHow to concatenate a Python dictionary to display all the values together?
You can concatenate all values from a Python dictionary using dict.values() combined with the join() method. This approach extracts all values and joins them with a specified separator. Basic Concatenation with Comma Separator The simplest way is to get all values and join them with a comma ? a = {'foo': "Hello", 'bar': "World"} vals = a.values() concat = ", ".join(vals) print(concat) This will give the output ? Hello, World Using Different Separators You can use any separator string to join the values ? data = {'name': ...
Read MoreHow we can translate Python dictionary into C++?
A Python dictionary is a hash table data structure that stores key-value pairs. In C++, you can use the std::map or std::unordered_map containers to achieve similar functionality to Python dictionaries. Using std::map in C++ The std::map container provides an ordered key-value mapping similar to Python dictionaries ? #include #include using namespace std; int main(void) { /* Initializer_list constructor */ map m1 = { {'a', 1}, {'b', 2}, {'c', 3}, {'d', 4}, {'e', 5} }; cout
Read MoreString Template Class in C#
The StringTemplate class is part of the NString library that provides enhanced string formatting capabilities in C#. It offers a more readable alternative to String.Format by using named placeholders instead of numbered ones, making code less error-prone and easier to maintain. The StringTemplate class comes with the NString library, which includes several useful extension methods for string manipulation such as IsNullOrEmpty(), IsNullOrWhiteSpace(), Join(), Truncate(), Left(), Right(), and Capitalize(). Syntax The basic syntax for StringTemplate.Format uses named placeholders − string result = StringTemplate.Format("{PropertyName}", new { PropertyName = value }); For formatting with specific format ...
Read MoreDelete a file in C#
In C#, you can use the File.Delete() method from the System.IO namespace to delete files from the file system. This method permanently removes the specified file if it exists. Syntax Following is the syntax for deleting a file − File.Delete(string path); Parameters path − A string specifying the path of the file to be deleted. This can be a relative or absolute path. Using File.Delete() Method The File.Delete() method removes the file at the specified path. If the file does not exist, the method does not throw an exception ...
Read MoreHow to add items/elements to an existing jagged array in C#?
Adding items to an existing jagged array in C# can be accomplished through several methods. You can modify individual elements directly, replace entire sub-arrays, or dynamically resize arrays using collections. The approach depends on whether you want to change existing elements or expand the array structure. Understanding Jagged Arrays A jagged array is an array of arrays where each sub-array can have different lengths. Unlike multidimensional arrays, jagged arrays provide flexibility in storing data with varying row sizes. Jagged Array Structure arr[0] arr[1] ...
Read MorePair Class in C#
The KeyValuePair structure in C# allows you to store a pair of related values as a single unit. It is commonly used in collections like Dictionary and can be used in lists to store paired data such as name-value combinations or key-identifier pairs. The KeyValuePair is a generic structure that provides a way to store two related pieces of data together, where TKey represents the key type and TValue represents the value type. Syntax Following is the syntax for creating a KeyValuePair − KeyValuePair pair = new KeyValuePair(key, value); Following is the syntax ...
Read MoreCheck if a File is hidden in C#
To check if a file is hidden in C#, use the FileAttributes enumeration which contains various file attribute members like Compressed, Directory, Hidden, and others. The FileAttributes.Hidden flag indicates whether a file has the hidden attribute set. You can retrieve file attributes using File.GetAttributes() and then check for the Hidden flag using bitwise operations. Syntax Following is the syntax for getting file attributes − FileAttributes attributes = File.GetAttributes(filePath); Following is the syntax for checking if a file is hidden − bool isHidden = (attributes & FileAttributes.Hidden) == FileAttributes.Hidden; Using ...
Read MoreReverse a Stack using C#
A stack is a Last-In-First-Out (LIFO) data structure in C#. To reverse a stack, we can use another stack and leverage the LIFO property by popping elements from the original stack and pushing them into a new stack. The System.Collections.Stack class provides Push() and Pop() methods that make stack reversal straightforward. Syntax Following is the basic syntax for creating and reversing a stack − Stack originalStack = new Stack(); Stack reversedStack = new Stack(); while (originalStack.Count != 0) { reversedStack.Push(originalStack.Pop()); } How Stack Reversal Works The reversal process ...
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