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Understanding Canvas and Surface concepts
...u are familiar with that. All the logic on how to draw a circle, or a box, etc is contained inside Canvas. A canvas draws on a Bitmap or an open GL container but there is no reason why in the future it could be extended to draw onto other types of rasters.
SurfaceView is a View that contains a Surf...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
... all in one block.
BEGIN and END are just like { and } in C/++/#, Java, etc.
They bound a logical block of code. I tend to use BEGIN and END at the start and end of a stored procedure, but it's not strictly necessary there. Where it IS necessary is for loops, and IF statements, etc, where you ...
HTML table with fixed headers?
...es.
Four lines of code.
Works for all configurations (table-layout: fixed, etc.).
document.getElementById("wrap").addEventListener("scroll", function(){
var translate = "translate(0,"+this.scrollTop+"px)";
this.querySelector("thead").style.transform = translate;
});
Support for CSS transfo...
To underscore or to not to underscore, that is the question
...n underscore.
By default, StyleCop disallows the use of underscores, m_, etc., to mark local class fields, in favor of the ‘this.’ prefix. The advantage of using ‘this.’ is that it applies equally to all element types including methods, properties, etc., and not just fields, making all cal...
What does pylint's “Too few public methods” message mean
...dded, you want o perform some operations on it, control how its displayed, etc.)
– Burhan Khalid
Dec 25 '12 at 4:34
Th...
How do I use valgrind to find memory leaks?
...all Valgrind on your system.
sudo apt install valgrind # Ubuntu, Debian, etc.
sudo yum install valgrind # RHEL, CentOS, Fedora, etc.
Valgrind is readily usable for C/C++ code, but can even be used for other
languages when configured properly (see this for Python).
To run Valgrind, pass the ex...
“To Do” list before publishing Android app to market [closed]
...mall as possible, so double-check you're only including resources (images, etc.) that are still being used in your app. Use OptiPNG/ PNGCrush on any .png images you have in your app - that can reduce the image file sizes by about 10%, which can be a significant part of your overall app size.
Also, ...
What exactly does the post method do?
...ssage queue.
So startAnimation will be fired in a new thread when it is fetched from the messageQueue
[EDIT 1]
Why do we use a new thread instead of UI thread (main thread)?
UI Thread :
When application is started, Ui Thread is created automatically
it is in charge of dispatching the events...
What's the difference between the atomic and nonatomic attributes?
... Given that any thread-safe code will be doing its own locking etc, when would you want to use atomic property accessors? I'm having trouble thinking of a good example.
– Daniel Dickison
May 24 '11 at 20:00
...
Performance difference for control structures 'for' and 'foreach' in C#
...get:
list[0]; // head
list[1]; // head.Next
list[2]; // head.Next.Next
// etc.
When you call GetEnumerator (implicitly using the forach-syntax), you'll get an IEnumerator object that has a pointer to the head node. Each time you call MoveNext, that pointer is moved to the next node, like so:
IEn...