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Is it safe to ignore the possibility of SHA collisions in practice?
... we have a billion unique images, one megabyte each.
We calculate the SHA-256 hash for the contents of each file.
The possibility of collision depends on:
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What is the “double tilde” (~~) operator in JavaScript? [duplicate]
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ghoppeghoppe
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301
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A fast method to round a double to a 32-bit int explained
... bits of mantissa.
Now, to the magic number; as you correctly stated, 6755399441055744 is 2^51 + 2^52; adding such a number forces the double to go into the "sweet range" between 2^52 and 2^53, which, as explained by Wikipedia here, has an interesting property:
Between 252=4,503,599,627,370,4...
Is it possible to have a Subversion repository as a Git submodule?
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richqrichq
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Python: How would you save a simple settings/config file?
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edited Nov 29 '19 at 12:55
answered Sep 29 '13 at 13:42
G...
Covariance, Invariance and Contravariance explained in plain English?
...(A)) = parametertype(method asdeclaredin(B)) when overriding. Since Java 1.5, covariant return types are permitted when overriding, i.e. the following will compile in Java 1.5, but not in Java 1.4:
class Collection {
Iterator iterator() { ... }
}
class List extends Collection {
@Override
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How can I get Knockout JS to data-bind on keypress instead of lost-focus?
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answered Dec 8 '10 at 19:25
Sergei GolosSergei Golos
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Caveats of select/poll vs. epoll reactors in Twisted
..., 100, then that's roughly twice as expensive as selecting on a single fd, 50. Adding more fds below the highest isn't quite free, so it's a little more complicated than this in practice, but this is a good first approximation for most implementations.
The cost of epoll is closer to the number of ...
Browsers' default CSS for HTML elements
...lorer
3. Default Styles for Chrome / Webkit
4. Default Styles for Opera
5. Default Styles for HTML4 (W3C spec)
6. Default Styles for HTML5 (W3C spec)
Sample, per the default W3C HTML4 spec:
html, address,
blockquote,
body, dd, div,
dl, dt, fieldset, form,
frame, frameset,
h1, h2, h3, h4,
h5, h...
Can a constructor in Java be private?
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