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Is it possible to make abstract classes in Python?
...decorator to declare a method abstract, and declare a class abstract using one of three ways, depending upon your Python version.
In Python 3.4 and above, you can inherit from ABC. In earlier versions of Python, you need to specify your class's metaclass as ABCMeta. Specifying the metaclass has dif...
How to check if an object is nullable?
...
plus one for you sir for adding test cases. I've used those test cases for checking all the other answers. More people should go this extra bit.
– Marty Neal
Jan 7 '11 at 21:06
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For loop example in MySQL
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Assume you have one table with name 'table1'. It contain one column 'col1' with varchar type. Query to crate table is give below
CREATE TABLE `table1` (
`col1` VARCHAR(50) NULL DEFAULT NULL
)
Now if you want to insert number from 1 to...
Get nth character of a string in Swift programming language
...ise, it's more
efficient to keep it a Substring.
It would be great if someone could figure out a good way to merge
these two extensions into one. I tried extending StringProtocol
without success, because the index method does not exist there. Note: This answer has been already edited, it is properl...
Is duplicated code more tolerable in unit tests?
...ssertEqual(23, person.getAge())
Then perhaps you need a single assertPersonEqual method, so that you can write assertPersonEqual(Person('Joe', 'Bloggs', 23), person). (Or perhaps you simply need to overload the equality operator on Person.)
As you mention, it is important for test code to be rea...
Examples of GoF Design Patterns in Java's core libraries
... of design patterns in Wikipedia. It also mentions which patterns are mentioned by GoF. I'll sum them up here and try to assign as many pattern implementations as possible, found in both the Java SE and Java EE APIs.
Creational patterns
Abstract factory (recognizeable by creational methods returnin...
What is phtml, and when should I use a .phtml extension rather than .php?
...ring what the difference between .phtml and .php files is, and when to use one over the other.
6 Answers
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Why can't I access DateTime->date in PHP's DateTime class?
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Why wouldn't one want this exact format? It is the same format as MySQL has for dates.
– Elia Iliashenko
Jul 16 '15 at 16:51
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How to display count of notifications in app launcher icon [duplicate]
...and you can search for this on stackoverflow, e.g. here. But I will repeat one more time: there is no standard API for this and I want to say it is a bad practice. App's icon notification badge is an iOS pattern and it should not be used in Android apps anyway. In Andrioid there is a status bar noti...
Python integer division yields float
...e been a controversial decision, but enough people felt it was the correct one. Count me in the group that loves the change. It is nice we can all agree to disagree. Cheers. :)
– Ray Toal
Aug 7 '19 at 2:39
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