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Differences between Java 8 Date Time API (java.time) and Joda-Time
...lds. A common feature of both field implementation design is that both are based on values of type long (no other types, not even enums).
Enum
JSR-310 offers enums like DayOfWeek or Month while Joda-Time does not offer this because it was mainly developed in years 2002-2004 before Java 5.
Zone AP...
What is the maximum value for an int32?
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If you think the value is too hard to remember in base 10, try base 2:
1111111111111111111111111111111
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answered Jun 1 '10 at...
Selecting data frame rows based on partial string match in a column
I want to select rows from a data frame based on partial match of a string in a column, e.g. column 'x' contains the string "hsa". Using sqldf - if it had a like syntax - I would do something like:
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Select multiple records based on list of Id's with linq
...aining Id's of my UserProfile table. How can i select all UserProfiles based on the list of Id's i got in a var using LINQ ?
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Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
... @einpoklum And what exactly would you gain from an abstract base class? Take std::set as an example. It does not inherit from an abstract base class. How does that limit your usage of std::set? Is there anything you cannot do with a std::set because it does not inherit from an abstrac...
top -c command in linux to filter processes listed based on processname
...on -u but I am wondering if there is any easy way to filter the processes based on processname listed under COMMAND column of the top output.
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Understand the “Decorator Pattern” with a real world example
... want toppings of his desire and final bill-amount will be composed of the base pizzas and additionally ordered toppings. Each topping decorator would know about the pizzas that it is decorating and it's price. GetPrice() method of Topping object would return cumulative price of both pizza and the t...
Finding the type of an object in C++
... a bad_cast exception.
Make sure there is at least one virtual function in Base class to make dynamic_cast work.
Wikipedia topic Run-time type information
RTTI is available only for classes that are polymorphic, which means
they have at least one virtual method. In practice, this is not a
limitatio...
Creating a new column based on if-elif-else condition
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
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Perfect, it's great being able to perform Interface-based queries and still maintain the collection as IQueryable. A bit annoying however that there is basically no way of thinking up this fix, without knowing the inner workings of EF.
– Anders
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