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What's the difference between deadlock and livelock?
...k 1
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Both examples force the threads to aquire the locks in different orders.
While the deadlock waits for the other lock,
the livelock does not really wait - it desperately tries to acquire the lock without the chance of gettin
How do I extract a sub-hash from a hash?
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If you don't use rails, Hash#values_at will return the values in the same order as you asked them so you can do this:
def slice(hash, *keys)
Hash[ [keys, hash.values_at(*keys)].transpose]
end
def except(hash, *keys)
desired_keys = hash.keys - keys
Hash[ [desired_keys, hash.values_at(*desire...
Mock framework vs MS Fakes frameworks
...oles (they call them shims), and unfortunately does not include mocks. In order to understand the differences and similarities between NMock and MS Fakes, it is helpful to understand what these different types of test doubles are:
Stubs: Stubs are used when you need to provide a values for methods...
Does Swift have access modifiers?
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We all know that anything is hackable. We just need some order whats why we need access modifiers
– canbax
Feb 21 '18 at 7:43
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How to check if a string starts with a specified string? [duplicate]
...-intuitive. I'd recommend editing the answer to use the regular comparison order. (There used to be a trivial reason some programmers did that for a period of time, but it's not necessary.) It's more readable and intuitive as "if (strpos($string2, 'http') === 0) ...
– orrd
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What is “2's Complement”?
...nd that to mean -15?
The answer is that we change the meaning of the high-order bit (the leftmost one). This bit will be a 1 for all negative numbers. The change will be to change the sign of its contribution to the value of the number it appears in. So now our 11110001 is understood to represent...
How to turn on (literally) ALL of GCC's warnings?
... bitch about it." -- I am not obliged to participate in the GCC project in order to critizise it, especially not if #31573 has been flagged as WONTFIX already. That puts this subject from the "ask about it" into the "bitch about it" ballpark.
– DevSolar
Jul 30 ...
Difference between Covariance & Contra-variance
...t deliver something more specific (an actual work-product). Either way the order of subtypes (LSP) is unbroken.
– karfus
Jul 31 '19 at 11:23
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Delete all local changesets and revert to tree
...revision good. You can now replace foo-clean/.hg/hgrc with foo/.hg/hgrc in order to preserve your repository-local settings such as the default push/pull path.
When you are satisfied that foo-clean has everything you need from foo, then simply delete foo and rename foo-clean to foo. Do a hg pull to...
Covariance and contravariance real world example
... from the calling code.
Because of the inverted approach of using higher order functions in this manner, by the time the Action is invoked, it is the more derived Zebra instance which is invoked against the zebraAction function (passed as a parameter), although the function itself uses a less deri...