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Why do we need fibers
...
Fibers are something you will probably never use directly in application-level code. They are a flow-control primitive which you can use to build other abstractions, which you then use in higher-level code.
Probably the #1 use of fibers ...
What is the HEAD in git?
.... In this case, you have to imagine this as a temporary branch without a name; so instead of having a named branch reference, we only have HEAD. It will still allow you to make commits (which will update HEAD), so the above short definition is still true if you think of a detached HEAD as a temporar...
What does the “Just” syntax mean in Haskell?
...ly into every module.
What Maybe is, Structurally
The definition looks something like this:
data Maybe a = Just a
| Nothing
That declaration defines a type, Maybe a, which is parameterized by a type variable a, which just means that you can use it with any type in place of a.
Cons...
What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?
...sitory mainly provides CRUD functions.
PagingAndSortingRepository provides methods to do pagination and sorting records.
JpaRepository provides some JPA-related methods such as flushing the persistence context and deleting records in a batch.
Because of the inheritance mentioned above, JpaReposit...
LINQ-to-SQL vs stored procedures? [closed]
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Some advantages of LINQ over sprocs:
Type safety: I think we all understand this.
Abstraction: This is especially true with LINQ-to-Entities. This abstraction also allows the framework to add additional improvements that you...
Error: Can't set headers after they are sent to the client
I'm fairly new to Node.js and I am having some issues.
32 Answers
32
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What's the best way to get the last element of an array without deleting it?
...; (as suggested by Quasimodo's clone ; available per PHP 7.3)
(functions mentioned: array_key_last , array_keys , array_pop , array_slice , array_values , count , end , reset)
The test inputs (<<input code>>s) to combine with:
null = $array = null;
empty = $array = [];
last_null = ...
What is the C runtime library?
What actually is a C runtime library and what is it used for? I was searching, Googling like a devil, but I couldn't find anything better than Microsoft's: "The Microsoft run-time library provides routines for programming for the Microsoft Windows operating system. These routines automate many commo...
Android accelerometer accuracy (Inertial navigation)
I was looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings.
...
Very simple log4j2 XML configuration file using Console and File appender
...onfiguration status="INFO">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
</Console>
<File name="MyFile" fileName="all.log" immediateFlush=...