How-to articles, tricks, and solutions about IDIOMS

How can I initialise a static Map?

To initialize a static Map in Java, you can use the Map interface's of method, which was added in Java 9. The of method creates an immutable Map with a fixed set of key-value pairs.

How do I reverse an int array in Java?

To reverse an int array in Java, you can use a loop to swap the elements at the beginning and end of the array, and then move the pointers inward until they meet in the middle of the array.

What does if __name__ == "__main__": do?

The special __name__ variable in Python is a string that contains the name of the current module. If the module is the main program, __name__ will be set to the string "__main__".