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What is the purpose of a question mark after a type (for example: int? myVariable)?
...<Int32>, pronounced "Nullable of Int32," can be assigned any
value from -2147483648 to 2147483647, or it can be assigned the null
value. A Nullable<bool> can be assigned the values true, false, or
null. The ability to assign null to numeric and Boolean types is
especially useful ...
How to scroll to the bottom of a UITableView on the iPhone before the view appears
...
From Jacob's answer, this is the code:
- (void) viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (self.messagesTableView.contentSize.height > self.messagesTableView.frame.size.height)
{
...
What is the overhead of creating a new HttpClient per call in a WebAPI client?
...t with a new HttpClient requires re-establishing a new TCP/IP connection.
From my tests, using plain HTTP on a LAN, the performance hit is fairly negligible. I suspect this is because there is an underlying TCP keepalive that is holding the connection open even when HttpClientHandler tries to clos...
How do you share code between projects/solutions in Visual Studio?
...bit and the other is 32 so you do not necessarily want separate dlls built from the same code to reference form each project. This way you can mimic the c functionality of using a .h file.
– user912447
Apr 12 '13 at 17:05
...
PHP: exceptions vs errors?
...
Nice code, thanks. I don't get where the class X comes from though, and what its purpose is?
– Alec
Jun 9 '09 at 0:00
...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
... more, the most recent change to that paragraph, in March 2017, changed it from this...
The formatting operations described here exhibit a variety of quirks that lead to a number of common errors (such as failing to display tuples and dictionaries correctly). Using the newer formatted string lit...
GIT commit as different user without email / or only email
...ry useful.
I think it would make even more sense to extract the user name from the email address and then use that as the username. But if you have to:
git commit --author="john@doe.com <>" -m "Impersonation is evil."
I ran in to this when trying to convert a repository from mercurial to...
Git Cherry-pick vs Merge Workflow
Assuming I am the maintainer of a repo, and I want to pull in changes from a contributor, there are a few possible workflows:
...
Javascript seconds to minutes and seconds
... get the remaining seconds, multiply the full minutes with 60 and subtract from the total seconds:
var seconds = time - minutes * 60;
Now if you also want to get the full hours too, divide the number of total seconds by 3600 (60 minutes/hour · 60 seconds/minute) first, then calculate the remaini...
PHP: Storing 'objects' inside the $_SESSION
... whole cloth based on data stashed in hidden form fields, or re-query them from the DB each time, you are using state. HTTP is stateless (more or less; but see GET vs. PUT) but almost everything anybody cares to do with a web app requires state to be maintained somewhere. Acting as if pushing the ...