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Count the items from a IEnumerable without iterating?
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IEnumerable doesn't support this. This is by design. IEnumerable uses lazy evaluation to get the elements you ask for just before you need them.
If you want to know the number of items without iterating over them you can use ICollection...
Declaring array of objects
...lement of the array to act as an object by default. To achieve this, I can do something like this in my code.
15 Answers
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What do we mean by Byte array? [closed]
Could someone please explain, I do not exactly get the concept.
3 Answers
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How to determine a Python variable's type?
How do I see the type of a variable whether it is unsigned 32 bit, signed 16 bit, etc.?
17 Answers
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How do I delete a Git branch with TortoiseGit
... local branch and choose to delete it.
To delete a remote branch we can do the same thing, but instead of right clicking on our local branch we expand the remotes tree in the left part of the dialog and then locate the remote branch.
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How to do parallel programming in Python?
For C++, we can use OpenMP to do parallel programming; however, OpenMP will not work for Python. What should I do if I want to parallel some parts of my python program?
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Android: how do I check if activity is running?
... way of determining whether or not a certain activity is active?
I want to do certain things depending on which activity is active.
eg:
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Get DOS path instead of Windows path
In a DOS window, how can I get the full DOS name/short name of the directory I am in?
11 Answers
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How do Trigonometric functions work?
..., and probably college, we are taught how to use trig functions, what they do, and what kinds of problems they solve. But they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you're set. Which is fine....
Why do we have map, fmap and liftM?
Why do we have three different functions that do essentially the same thing?
1 Answer
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