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What is ActiveMQ used for - can we apply messaging concept using a Database?
I looked it up and it used to send messages between 2 systems.
But why? Why wouldn't you just use a Database ?
There must be some feature that ActiveMQ has that Databases do not?
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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
... C# 7 version. I didn't want to remove the VB.NET version so I just posted it in a separate answer.
Go to updated version
Seems it's not supported, I implemented by myself, FYI, hope it to be helpful:
I updated the VB version and from now on it raises an event before changing the collection so yo...
What's the difference between including files with JSP include directive, JSP include action and usi
It seems that there are two methods for templating with JSP. Including files with one of these statements
5 Answers
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Show percent % instead of counts in charts of categorical variables
...(labels = percent) ## version 3.0.0
This question is currently the #1 hit on google for 'ggplot count vs percentage histogram' so hopefully this helps distill all the information currently housed in comments on the accepted answer.
Remark: If hp is not set as a factor, ggplot returns:
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Running code in main thread from another thread
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NOTE: This answer has gotten so much attention, that I need to update it. Since the original answer was posted, the comment from @dzeikei has gotten almost as much attention as the original answer. So here are 2 possible solutions:
1. If your background thread has a reference to a Context obje...
method overloading vs optional parameter in C# 4.0 [duplicate]
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One good use case for 'Optional parameters' in conjunction with 'Named Parameters' in C# 4.0 is that it presents us with an elegant alternative to method overloading where you overload method based on the number of parameters.
For example say you want a method foo to be be called/use...
Get a list of resources from classpath directory
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edited Sep 23 at 11:08
Lena Bru
11.6k77 gold badges5151 silver badges102102 bronze badges
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What is the type of lambda when deduced with “auto” in C++11?
...f a lambda is a function pointer. When I performed following test, I found it to be wrong ( demo ).
6 Answers
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date format yyyy-MM-ddTHH:mm:ssZ
I assume this should be pretty simple, but could not get it :(.
In this format Z is time zone.
T is long time pattern
How could I get a date in this format except by using
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Remove substring from the string
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edited Oct 23 '19 at 21:41
noraj
1,6661414 silver badges2727 bronze badges
answe...