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Why doesn't Haskell's Prelude.read return a Maybe?
...Edit: As of GHC 7.6, readMaybe is available in the Text.Read module in the base package, along with readEither: http://hackage.haskell.org/packages/archive/base/latest/doc/html/Text-Read.html#v:readMaybe
Great question! The type of read itself isn't changing anytime soon because that would break ...
Is there a generic constructor with parameter constraint in C#?
... @bc3tech, technically, your point is not 100% correct. If a base class has no default constructor, you are forced to provide a constructor that calls one of the base class constructors. You are not forced to provide a matching constructor. There is a subtle difference here...
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Selecting element by data attribute
Is there an easy and straight-forward method to select elements based on their data attribute? For example, select all anchors that has data attribute named customerID which has value of 22 .
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How are people managing authentication in Go? [closed]
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There should be no "PasswordSalt" field in your database, because you should use bcrypt as your hashing algorithm, which automatically creates a salt and includes it in the returned hash. Also use a constant time comparison function.
– 0xdabbad00
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Can I squash commits in Mercurial?
...you want to use an extension you could use:
The Collapse Extension
The Rebase Extension or
The Histedit Extension
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What's the difference between a mock & stub?
...me shortcut which makes them not suitable for production (an in memory database is a good example).
Stubs provide canned answers to calls made during the test, usually not responding at all to anything outside what's programmed in for the test. Stubs may also record information about calls, such a...
Best practices for using Markers in SLF4J/Logback
...it, but our logging strategy is fairly simple, using straightforward class based loggers and no fancy stuff like MDC or Markers.
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Smart pointers: who owns the object? [closed]
...ct that must be accessible from objects nested in it (usually as a virtual base class). This could be solved by passing a weak_ptr to them, but it doesn't have a shared_ptr to itself. As it knows these objects wouldn't live longer than him, it passes a hub_ptr to them (it's just a template wrapper t...
Is 161803398 A 'Special' Number? Inside of Math.Random()
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No, but it's based on Phi (the "golden ratio").
161803398 = 1.61803398 * 10^8 ≈ φ * 10^8
More about the golden ratio here.
And a really good read for the casual mathematician here.
And I found a research paper on random number gen...
Random string generation with upper case letters and digits
... Using string.ascii_uppercase (or string.ascii_letters + string.digits for base62 instead of base36) is safer in cases where encoding is involved.
– Blixt
May 17 '15 at 18:03
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