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Performance optimization strategies of last resort [closed]
...o often on Stack Overflow.
P.S. It may be wondered why I didn't use a profiler. The answer is that almost every one of these "problems" was a function call site, which stack samples pinpoint. Profilers, even today, are just barely coming around to the idea that statements and call instructions are...
What is the difference between screenX/Y, clientX/Y and pageX/Y?
...d click around for myself! Open up your console in developer tools/Firebug etc and paste this:
document.addEventListener('click', function(e) {
console.log(
'page: ' + e.pageX + ',' + e.pageY,
'client: ' + e.clientX + ',' + e.clientY,
'screen: ' + e.screenX + ',' + e.screenY)
...
How to enumerate an enum with String type?
...lt version of CaseIterator. I can extend enums that are defined in another file with your version. If you make allCases in the extension public you can also extend enums defined in different frameworks.
– adamfowlerphoto
Feb 6 '19 at 15:29
...
How do you use the Immediate Window in Visual Studio?
...nice tip. In fact, this combines nicely with another trick I use: >open Filename will open the selected file in the solution, and even has filename completion.
– Phillip Ngan
Feb 28 '17 at 19:24
...
Framework vs. Toolkit vs. Library [duplicate]
...the task of the client code, such as building a window, resizing a window, etc. The lower levels of abstraction within a toolkit are either fixed, or can themselves be operated on by client code in a proscribed manner. (Think Window style, which can either be fixed, or which could be altered in adva...
Exception thrown inside catch block - will it be caught again?
...{ } catch (Exception e){ System.err.println("In catch Exception: "+e.getClass()); }catch (IOException e){ System.err.println("In catch IOException: "+ e.getClass()); } and the code in try block generates IO Exception, Will it go to the immediate general Exception block or it will fly ove...
How can I create a two dimensional array in JavaScript?
...le, some say it is and then give an example and others refute the example, etc.
50 Answers
...
Get escaped URL parameter
...r information from the URL, like the port specified, or the path, protocol etc:
var url = $.url('http://allmarkedup.com/folder/dir/index.html?item=value');
url.attr('protocol'); // returns 'http'
url.attr('path'); // returns '/folder/dir/index.html'
It has other features as well, check out its ho...
How to change the CHARACTER SET (and COLLATION) throughout a database?
...
_bin -- just compare the bits; don't consider case folding, accents, etc
_ci -- explicitly case insensitive (A=a) and implicitly accent insensitive (a=á)
_ai_ci -- explicitly case insensitive and accent insensitive
_as (etc) -- accent-sensitive (etc)
_bin -- simple, fast
_ge...
How to drop a PostgreSQL database if there are active connections to it?
... all postgresql processes that are running by tying this command
sudo /etc/init.d/postgresql restart
type the command
bg to check if other postgresql processes are still running
then followed by dropdb dbname to drop the database
sudo /etc/init.d/postgresql restart
bg
dropdb dbname
Thi...