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Is using a lot of static methods a bad thing?
...to the class to find its dependencies and initialise things in the correct order. In this case, it needs the ResourceLoader to be initialised before running. Now scale up this dependency nightmare and you can probably guess what will happen. Imagine trying to maintain code where there is no expli...
What is a JavaBean exactly?
...tance of the application, or even on a whole other machine!
Of course, in order to do that, the class has to abide by certain limitations. Chief among them is that all instance fields must be either primitive types (int, bool, etc), instances of some class that is also serializable, or marked as t...
How to concatenate text from multiple rows into a single text string in SQL server?
...ts ST1
WHERE ST1.SubjectID = ST2.SubjectID
ORDER BY ST1.SubjectID
FOR XML PATH ('')
) [Students]
FROM dbo.Students ST2
) [Main]
You can do the same thing in a more compact way if you can concat the commas at the beginning and ...
How to get index using LINQ? [duplicate]
...
An IEnumerable is not an ordered set.
Although most IEnumerables are ordered, some (such as Dictionary or HashSet) are not.
Therefore, LINQ does not have an IndexOf method.
However, you can write one yourself:
///<summary>Finds the index of ...
How do cache lines work?
...,5% of its time (if it only reads memory) idle waiting for the memory.
In order to speed things up there is the L1, L2, L3 caches. They use memory being directly placed on the chip and using a different kind of transistor circuits to store the given bits. This takes more room, more energy and is mo...
What's the difference between ASCII and Unicode?
... UTF-7, widely ignored.
An issue with the UTF-16/32 encodings is that the order of the bytes will depend on the endian-ness of the machine that created the text stream. So add to the mix UTF-16BE, UTF-16LE, UTF-32BE and UTF-32LE.
Having these different encoding choices brings back the code page d...
python generator “send” function purpose?
...cipe
Let us have a recipe, which expects predefined set of inputs in some order.
We may:
create a watched_attempt instance from the recipe
let it get some inputs
with each input return information about what is currently in the pot
with each input check, that the input is the expected one (and f...
What is a good reason to use SQL views?
...most useful when you always need
to join the same set of tables say an
Order with an Order Detail to get
summary calculation fields etc.
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Message Queue vs Message Bus — what are the differences?
...eing removed upon being dequeued). Neither B nor C need to be available in order for A to send updates. Each message queue is persistent, so if an application restarts, it will begin pulling from its queue once it is back online. This helps break dependencies between dependent systems and can provid...
What are the most useful Intellij IDEA keyboard shortcuts? [closed]
...Intellij IDEA keyboard shortcuts I find most useful (listed in roughly the order of usage for me):
The shortcut I use the most is Ctrl + B (Go to declaration), to see what a method does, where a variable is declared etc. This is almost always followed by Ctrl + Alt + Left to get back to where I was...