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How to convert a JS Date to a Python date object?

How do I convert a JS Date to a Python date object?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You'll majorly want to convert a Javascript date to a Python date object when you send it over a network connection like an AJAX request or an IPC message(on nodejs). This representation will be in string format and you can choose to send it in any format you like. You ... Read More

How to convert Python date string mm/dd/yyyy to datetime?

How do I convert Python date string mm/dd/yyyy to datetime?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You can convert a string to date object using the strptime function. Provide the date string and the format in which the date is specified. For example, import datetime date_str = '29/12/2017' # The date - 29 Dec 2017 format_str = '%d/%m/%Y' # The format datetime_obj = datetime.datetime.strptime(date_str, format_str) print(datetime_obj.date())This ... Read More

How do I invoke a Java method when given the method name as a string?

How do I invoke a Java method when given the method name as a string? 
radhakrishna
Answered on 3rd Jan, 2018

The java.lang.reflect.Method class provides information about, and access to, a single method on a class or interface. The reflected method may be a class method or an instance method (including an abstract method). A Method permits widening conversions to occur when matching the actual parameters to invoke with the underlying ... Read More

How to get the Python date object for last Wednesday?

How do I get the Python date object for last Wednesday?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You can get the Python date object for last wednesday using some Python date math. Whatever the day of the week it is today, subtracting 2 from it and taking the modulus of the result by 7 will give us how back was wedenesday. For example, from datetime import date ... Read More

How to convert Python date in JSON format?

How do I convert Python date in JSON format?
Rajendra Dharmkar
Answered on 8th Jan, 2018

There is no standard JSON format for dates. Although JavaScript does have a standard date format that is human readable, sorts correctly, includes fractional seconds(which can help re-establish chronology) and  conforms to ISO 8601. You can convert a Python date to the JS date format using the strftime function and ... Read More

What is overriding and overloading under polymorphism in java?

What is overriding and overloading under polymorphism in java?
Giri Raju
Answered on 3rd Jan, 2018

Overriding − If super class and subclass have methods with same name including parameters. JVM calls the respective method based on the object used to call the method. i.e. if the current object using which the method is called, is of super class type the method of the super class ... Read More

How to sort a Python date string list?

How do I sort a Python date string list?
Rajendra Dharmkar
Answered on 8th Jan, 2018

To sort a Python date string list using the sort function, you'll have to convert the dates in objects and apply the sort on them. For this you can use the key named attribute of the sort function and provide it a lambda that creates a datetime object for each ... Read More

How to convert Python date to Unix timestamp?

How do I convert Python date to Unix timestamp?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You can use the datetime module to convert a datetime to a UTC timestamp in Python. If you already have the datetime object in UTC, you can the timestamp() to get a UTC timestamp. This function returns the time since epoch for that datetime object. If you have the datetime ... Read More

How to print date in a regular format in Python?

How do I print date in a regular format in Python?
Rajendra Dharmkar
Answered on 8th Jan, 2018

If you print the dates directly using a print function, you'd get regular dates, for example, import datetime today = datetime.date.today() print(today)You will get the output:2018-1-2which is exactly what you want. But when you append this to a list and then try to print it, for example, import datetime my_list ... Read More

How to set the first day of each week to weekday using Python?

How do I set the first day of each week to weekday using Python?
Rajendra Dharmkar
Answered on 8th Jan, 2018

You can set the first day of each week to weekday in Python. In the calender module there is a function, setfirstweekday() that helps you to set the first day of each week to the code of the weekday you provide to it. Note that setfirstweekday affects only display functions ... Read More

What is Has-a relationship in Java?

What is Has-a relationship in Java?
Sreemaha
Answered on 3rd Jan, 2018

These relationships are mainly based on the usage. This determines whether a certain class HAS-A certain thing. This relationship helps to reduce duplication of code as well as bugs. Example public class Vehicle{} public class Speed{} public class Van extends Vehicle { private Speed sp; } ... Read More

What is Is-a relationship in Java?

What is Is-a relationship in Java? 
varma
Answered on 3rd Jan, 2018

IS-A is a way of saying: This object is a type of that object. Let us see how the extends keyword is used to achieve inheritance. Example public class Animal { } public class Mammal extends Animal { } public class Reptile extends Animal { } public class Dog ... Read More

What is the difference between compile time polymorphism and runtime polymorphism in java?

What is the difference between compile time polymorphism and runtime polymorphism in java?
usharani
Answered on 3rd Jan, 2018

If we perform (achieve) method overriding and method overloading using instance methods, it is run time (dynamic) polymorphism. In dynamic polymorphism the binding between the method call an the method body happens at the time of execution and, this binding is known as dynamic binding or late binding. Example ... Read More

What is the difference between method overloading and method overriding in Java?

What is the difference between method overloading and method overriding in Java?
Prabhas
Answered on 3rd Jan, 2018

Following are the notable differences between overloading and overriding. Method Overloading In method overloading a class have two or more methods in with the same name and different parameters. In overloading return type could vary in both methods. JVM calls the respective method based on the parameters passed to ... Read More

What is the difference between method overloading and method hiding in Java?

What is the difference between method overloading and method hiding in Java?
varun
Answered on 3rd Jan, 2018

method hiding − When super class and the sub class contains same methods including parameters, and if they are static and, when called, the super class method is hidden by the method of the sub class this is known as method hiding. Example Live Demo class Demo{ ... Read More

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