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In this article we are going to discuss the set::max_size() in C++ STL, their syntax, working and their return values.What is Set in C++ STL?Sets in C++ STL are the containers which must have unique elements in a general order. Sets must have unique elements because the value of the element identifies the element. Once added a value in set container later can’t be modified, although we can still remove or add the values to the set. Sets are used as binary search trees.What is set::max_size()?max_size() is an inbuilt function in C++ STL which is declared in header file. ... Read More
You can get the current date and time using multiple ways. The easiest way is to use the datetime module. It has a function, now, that gives the current date and time. exampleimport datetime now = datetime.datetime.now() print("Current date and time: ") print(str(now))OutputThis will give the output −2017-12-29 11:24:48.042720You can also get the formatted date and time using strftime function. It accepts a format string that you can use to get your desired output. Following are the directives supported by it.DirectiveMeaning%aLocale's abbreviated weekday name.%ALocale's full weekday name.%bLocale's abbreviated month name.%BLocale's full month name.%cLocale's appropriate date and time representation.%dDay of the month ... Read More
In this article we are going to discuss the set::count in C++ STL, their syntax, working and their return values.What is Set in C++ STL?Sets in C++ STL are the containers which must have unique elements in a general order. Sets must have unique elements because the value of the element identifies the element. Once added a value in set container later can’t be modified, although we can still remove or add the values to the set. Sets are used as binary search trees.What is set::count()?count() function is an inbuilt function in C++ STL, which is defined in header file. ... Read More
You can use the cmath module in order to solve Quadratic Equation using Python. This is because roots of quadratic equations might be complex in nature. If you have a quadratic equation of the form ax^2 + bx + c = 0, then,Exampleimport cmatha = 12 b = 8 c = 1 # Discriminent d = (b**2) - (4*a*c) root1 = (-b - cmath.sqrt(d)) / (2 * a) root2 = (-b + cmath.sqrt(d)) / (2 * a) print(root1) print(root2)OutputThis will give the output(-0.5+0j) (-0.16666666666666666+0j)
In this article we are going to discuss the set::crbegin() and set::crend() functions in C++ STL, their syntax, working and their return values.What is Set in C++ STL?Sets in C++ STL are the containers which must have unique elements in a general order. Sets must have unique elements because the value of the element identifies the element. Once added a value in set container later can’t be modified, although we can still remove or add the values to the set. Sets are used as binary search trees.What is set::crbegin()?crbegin() function is an inbuilt function in C++ STL, which is defined ... Read More
You can generate these just random 128-bit strings using the random module's getrandbits function that accepts a number of bits as an argument. exampleimport random hash = random.getrandbits(128) print(hex(hash))OutputThis will give the output −0xa3fa6d97f4807e145b37451fc344e58c
In this article we are going to discuss the set::insert() function in C++ STL, their syntax, working and their return values.What is Set in C++ STL?Sets in C++ STL are the containers which must have unique elements in a general order. Sets must have unique elements because the value of the element identifies the element. Once added a value in set container later can’t be modified, although we can still remove or add the values to the set. Sets are used as binary search trees.What is set::insert()?insert() function is an inbuilt function in C++ STL, which is defined in ... Read More
You can use the itertools package's permutations method to find all permutations of a list in Python. You can use it as follows −Exampleimport itertools perms = list(itertools.permutations([1, 2, 3])) print(perms)OutputThis will give the output −[(1, 2, 3), (1, 3, 2), (2, 1, 3), (2, 3, 1), (3, 1, 2), (3, 2, 1)]
It is very easy to do date and time maths in Python using time delta objects. Whenever you want to add or subtract to a date/time, use a DateTime.datetime(), then add or subtract date time.time delta() instances. A time delta object represents a duration, the difference between two dates or times. The time delta constructor has the following function signatureDateTime.timedelta([days[, seconds[, microseconds[, milliseconds[, minutes[, hours[, weeks]]]]]]])¶Note: All arguments are optional and default to 0. Arguments may be ints, longs, or floats, and may be positive or negative. You can read more about it here https://docs.python.org/2/library/datetime.html#timedelta-objectsExampleAn example of using the time ... Read More
The json module in python allows you to dump a dict to json format directly. To use it,Exampleimport json my_dict = { 'foo': 42, 'bar': { 'baz': "Hello", 'poo': 124.2 } } my_json = json.dumps(my_dict) print(my_json)OutputThis will give the output −'{"foo": 42, "bar": {"baz": "Hello", "poo": 124.2}}'You can also pass indent argument to prettyprint the json. exampleimport json my_dict = { 'foo': 42, 'bar': { 'baz': "Hello", 'poo': 124.2 } } my_json = json.dumps(my_dict, indent=2) print(my_json)OutputThis will give the output −{ "foo": 42, "bar": { "baz": "Hello", "poo": 124.2 } }