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How to return smart pointers (shared_ptr), by reference or by value?
...al C++ compilers implement RVO even when all optimizations are turned off. And with C++11's move semantics, this concern is even less relevant. (But the only way to be sure is to profile and experiment.)
If you're still not convinced, Dave Abrahams has an article that makes an argument for returnin...
How to Sort a List by a property in the object
...d Order which has properties such as OrderId , OrderDate , Quantity , and Total . I have a list of this Order class:
...
Git push error '[remote rejected] master -> master (branch is currently checked out)'
...lder contains only the actual repository data).
Execute the following command in your remote repository folder:
git config --bool core.bare true
Then delete all the files except .git in that folder. And then you will be able to perform git push to the remote repository without any errors.
...
What's the difference between an inverted index and a plain old index?
... two types denote directionality. One takes you forward through the index, and the other takes you backward (the inverse) through the index. That's it. There's no mystery to uncover here. Otherwise the two types are identical, it's just a question of what information you have, and as a result what ...
Difference between viewDidLoad and viewDidAppear
What is the difference between viewDidLoad and viewDidAppear ? What kind of initialization or custom code goes into those functions?
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Add SUM of values of two LISTS into new LIST
...
just curious how would zip() handles if array lengths for different? i.e what does zip returns for different array lengths and how would that affect the operation for x + y
– ealeon
Oct 24 '15 at 15:00
...
In Postgresql, force unique on combination of two columns
...l1, col2)
)
autoincrement is not postgresql. You want a serial.
If col1 and col2 make a unique and can't be null then they make a good primary key:
CREATE TABLE someTable (
col1 int NOT NULL,
col2 int NOT NULL,
primary key (col1, col2)
)
...
Why do we need RESTful Web Services?
...ed if it is very important for you to minimize the coupling between client and server components in a distributed application.
This may be the case if your server is going to be used by many different clients that you do not have control over. It may also be the case if you want to be able to upda...
Reset Entity-Framework Migrations
...nges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic.
...
Serializing a list to JSON
...atively, other, less mainstream options are available like Utf8Json parser and Jil: These may offer superior performance, if you really need it but, you will need to install their respective packages.
If stuck using .Net Core 2.2 or earlier;
Default to using Newtonsoft JSON.Net as your first choic...