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Java Reflection Performance
...Richard Riley Generally class instantiation is a pretty rare event for the selected classes you will use reflection on. I suppose you are right though--some people might instantiate every class reflectively, even ones that are recreated constantly. I would call that pretty bad programming (althoug...
How would I run an async Task method synchronously?
...ng a Task<Task<MyResult>>. The correct overload of Task.Run is selected either way, but the async delegate makes your intent obvious.
– Michael L Perry
Is “IF” expensive?
...nation on Cell Performance. Another fun one is this post about branchless selections on the Real Time Collision Detection Blog.
In addition to the excellent answers already posted in response to this question, I'd like to put in a reminder that although "if" statements are considered expensive low...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
...aping quote will be trimmed (in the 21st character). Then the SQL
sSQL = "select * from USERS where username = '" + username + "' and password = '" + password + "'"
combined with the aforementioned malformed username will result in the password already being outside the quotes, and will just con...
Undo git reset --hard with uncommitted files in the staging area
... solution. In case of PHPstorm I just had to right click the directory and select show local history and then revert to the last valid state.
– Shalom Sam
Sep 22 '14 at 4:44
...
Combining two expressions (Expression)
... .ReplacePar("parAdrZ", ExprAdres("Z").Body);
return UBEZPIECZONY.Select((Expression<Func<UBEZPIECZONY, UbezpExt>>)expr2);
}
}
And this is the subexpression building code:
public static Expression<Func<UBEZPIECZONY, UBEZP_ADRES>> ExprAdres(string sTyp)
{
r...
iOS UIImagePickerController result image orientation after upload
I am testing my iPhone application on an iOS 3.1.3 iPhone. I am selecting/capturing an image using a UIImagePickerController :
...
Differences between Emacs and Vim
...tor" has to go to emacs in my mind if for no other reason than a far wider selection of major and minor modes to help you as you type.
– Kendall Helmstetter Gelner
Sep 16 '09 at 1:42
...
Why should I use an IDE? [closed]
...the code, I can highlight a method and hit F1 to get help, right click and select "go to to definition" to jump straight to where it is defined. I hit one button and the application, with debugger automatically attached is launched for me. And so the list goes on. All the things that a developer doe...
SQLite Concurrent Access
...
If most of those concurrent accesses are reads (e.g. SELECT), SQLite can handle them very well. But if you start writing concurrently, lock contention could become an issue. A lot would then depend on how fast your filesystem is, since the SQLite engine itself is extremely fast...