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Why does this (null || !TryParse) conditional result in “use of unassigned local variable”?
The following code results in use of unassigned local variable "numberOfGroups" :
3 Answers
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What are 'closures' in .NET?
...on this very topic. (It has lots of examples.)
In essence, a closure is a block of code which can be executed at a later time, but which maintains the environment in which it was first created - i.e. it can still use the local variables etc of the method which created it, even after that method has...
Joining two lists together
... try:
List<string> a = new List<string>();
List<string> b = new List<string>();
a.AddRange(b);
MSDN page for AddRange
This preserves the order of the lists, but it doesn't remove any duplicates which Union would do.
This does change list a. If you wanted to preserve the...
Create a hexadecimal colour based on a string with JavaScript
I want to create a function that will accept any old string (will usually be a single word) and from that somehow generate a hexadecimal value between #000000 and #FFFFFF , so I can use it as a colour for a HTML element.
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Java Round up Any Number
...swer I'm looking for regarding a simple question: how do I round up any number to the nearest int ?
6 Answers
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What's the point of map in Haskell, when there is fmap?
...e creators of Haskell feel the need for a map function? Couldn't it just be what is currently known as fmap and fmap could be removed from the language?
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Pandas - Get first row value of a given column
This seems like a ridiculously easy question... but I'm not seeing the easy answer I was expecting.
7 Answers
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Message Queue vs Message Bus — what are the differences?
And are there any? To me, MB knows both subscribers and publishers and acts as a mediator, notifying subscribers on new messages (effectively a "push" model). MQ, on the other hand, is more of a "pull" model, where consumers pull messages off a queue.
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Pretty git branch graphs
I've seen some books and articles have some really pretty looking graphs of git branches and commits. How can I make high-quality printable images of git history?
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How many and which are the uses of “const” in C++?
As a novice C++ programmer there are some constructs that look still very obscure to me, one of these is const . You can use it in so many places and with so many different effects that is nearly impossible for a beginner to come out alive. Will some C++ guru explain once forever the various uses a...