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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...ods that are marked as const.
The mutable exception makes it so you can now write or set data members that are marked mutable. That's the only externally visible difference.
Internally those const methods that are visible to you can also write to data members that are marked mutable. Essentiall...
An async/await example that causes a deadlock
...hat was returned by GetStringAsync.
The continuation for GetJsonAsync is now ready to run, and it waits for the context to be available so it can execute in the context.
Deadlock. The top-level method is blocking the context thread, waiting for GetJsonAsync to complete, and GetJsonAsync is waiti...
Valid to use (anchor tag) without href attribute?
...e named anchor format is less commonly used, as the fragment identifier is now used to specify an [id] attribute (although for backwards compatibility you can still specify [name] attributes). An <a> element without an [href] attribute is still valid.
As far as semantics and styling is concer...
How do you know when to use fold-left and when to use fold-right?
...accumulator function x
fold x [A, B, C, D]
thus equals
A x B x C x D
Now you just have to reason about the associativity of your operator (by putting parentheses!).
If you have a left-associative operator, you'll set the parentheses like this
((A x B) x C) x D
Here, you use a left fold. Ex...
Why is lazy evaluation useful?
...ort (filter (< x) xs) ++ [x] ++ quickSort (filter (>= x) xs)
If we now want to find the minimum of the list, we can define
minimum ls = head (quickSort ls)
Which first sorts the list and then takes the first element of the list. However, because of lazy evaluation, only the head gets comp...
FileSystemWatcher vs polling to watch for file changes
... seen the file system watcher fail in production and test environments. I now consider it a convenience, but I do not consider it reliable. My pattern has been to watch for changes with the files system watcher, but poll occasionally to catch missing file changes.
Edit: If you have a UI, you ca...
Global variables in AngularJS
... oh god, why everybody is afraid of reaal global variables, if you know what your app will consist of, just make a real global js variable instead overcomplicating stuff
– Max Yari
Jun 26 '15 at 19:41
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How to make IntelliJ IDEA insert a new line at every end of file?
...natively not only in Idea, but in all major IDEs (some require a plugin).
Now all team members would have same configuration, eol, eof, and no more tabs vs spaces :)
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Mapping over values in a python dictionary
... that's because rather than look up all key-value pairs in one go, you are now using number-of-keys times my_dictionary.__getitem__ calls.
– Martijn Pieters♦
Oct 15 '14 at 15:21
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Compiling dynamic HTML strings from database
...ive and adding the scope watch function were the two things I was missing. Now that this is working, guess I'll read up again on directives and $compile, to better understand what's going on under the hood.
– giraffe_sense
Aug 12 '13 at 18:29
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