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Setting PayPal return URL and making it auto return?
... Stricker How can we setup return url for 2 different sites? like if i use one paypal account for 2 websites, but i can add only one URL as return url using your steps. how can i use that for 2 sites?
– Gaurav
Sep 2 '15 at 17:32
...
C# LINQ find duplicates in List
... value, and then pick a representative of the group if there are more than one element in the group. In LINQ, this translates to:
var query = lst.GroupBy(x => x)
.Where(g => g.Count() > 1)
.Select(y => y.Key)
.ToList();
If you want to know how...
What does “default” mean after a class' function declaration?
...ult version of the respective constructor or assignment operator, i.e. the one which just performs the copy or move action for each member. This is useful because the move constructor isn't always generated by default (e.g. if you have a custom destructor), unlike the copy constructor (and likewise ...
Detecting programming language from a snippet
... "Hello"
Let me find the code.
I couldn't find the code so I made a new one. It's a bit simplistic but it works for my tests. Currently if you feed it much more Python code than Ruby code it's likely to say that this code:
def foo
puts "hi"
end
is Python code (although it really is Ruby). T...
#1071 - Specified key was too long; max key length is 767 bytes
...cter it would be three bytes resulting in max index prefix length of 254.
One option you have is to just place lower limit on your VARCHAR fields.
Another option (according to the response to this issue) is to get the subset of the column rather than the entire amount, i.e.:
ALTER TABLE `mytable`...
What is Rack middleware?
...ing around Rack Middleware - you should be able to find pre-built rack components to do all of the steps above and more. See the Rack GitHub wiki for a list of middleware.
What's Middleware?
Middleware is a dreadful term which refers to any software component/library which assists with but is not ...
The difference between fork(), vfork(), exec() and clone()
...ollowed by exec(), which discards the current memory map and creates a new one, it was a needless expense. Nowadays, fork() doesn't copy the memory; it's simply set as "copy on write", so fork()+exec() is just as efficient as vfork()+exec().
clone() is the syscall used by fork(). with some paramet...
What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]
...
One thing that's important to know about the 4 hour maintenance window is that your server is not down for 4 hours a week! That's just when they'll do maintenance IF there is maintenance to be done. I've had RDS servers runni...
Java logical operator short-circuiting
...when used as logical operators, always evaluate both sides.
There is only one case of short-circuiting for each operator, and they are:
false && ... - it is not necessary to know what the right-hand side is because the result can only be false regardless of the value there
true || ... - i...
Launch Bootstrap Modal on page load
...er</h3>
</div>
<div class="modal-body">
<p>One fine body…</p>
</div>
<div class="modal-footer">
<a href="#" class="btn">Close</a>
<a href="#" class="btn btn-primary">Save changes</a>
</div>
</div>
...