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What is “loose coupling?” Please provide examples
... uses a CartContents class to keep track of the items in the shopping cart and an Order class for processing a purchase. The Order needs to determine the total value of the contents in the cart, it might do that like so:
Tightly Coupled Example:
public class CartEntry
{
public float Price;
...
How can I prevent the “You have mixed tabs and spaces. Fix this?” message?
...time I paste code into my .cs file, I get the dreaded "You have mixed tabs and spaces. Fix this?" message. It has three options:
...
How to calculate date difference in JavaScript?
... milliseconds to years. You must be aware of bissextile year, of timezone, and some days have 23 or 25 hours. Some years have 365,25 days, so there is no simple arithmetic here (still looking for an accurate solution).
– Alexandre Salomé
May 20 '14 at 12:50
...
What is the canonical way to check for errors using the CUDA runtime API?
Looking through the answers and comments on CUDA questions, and in the CUDA tag wiki , I see it is often suggested that the return status of every API call should checked for errors. The API documentation contains functions like cudaGetLastError , cudaPeekAtLastError , and cudaGetErrorString , b...
Notepad++ Multi editing
...
Yes: simply press and hold the Alt key, click and drag to select the lines whose columns you wish to edit, and begin typing.
You can also go to Settings > Preferences..., and in the Editing tab, turn on multi-editing, to enable selection o...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
I came across the sun.misc.Unsafe package the other day and was amazed at what it could do.
16 Answers
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What are the dangers when creating a thread with a stack size of 50x the default?
I'm currently working on a very performance critical program and one path I decided to explore that may help reduce resource consumption was increasing my worker threads' stack size so I can move most of the data ( float[] s) that I'll be accesing onto the stack (using stackalloc ).
...
How does variable assignment work in JavaScript?
...perty of an existing object. In the second example, you are assigning a brand new object.
a = b = {};
a and b are now pointers to the same object. So when you do:
a.foo = 'bar';
It sets b.foo as well since a and b point to the same object.
However!
If you do this instead:
a = 'bar';
you...
How to parse XML in Bash?
..., but I didn't feel like this much editing should be done to someone else, and comments don't allow formatting, so...
rdom () { local IFS=\> ; read -d \< E C ;}
Let's call that "read_dom" instead of "rdom", space it out a bit and use longer variables:
read_dom () {
local IFS=\>
...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...R(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same length (within two characters length difference).
Note: Microsoft SQL has 2 bytes of overhead for a VARCHAR. This may vary from DB to DB, but generally, there is at lea...