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How good is Java's UUID.randomUUID?
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@osa: Not producing collisions (more than to be expected from perfect randomness) is pretty much the lowest quality requirement for a RNG, while cryptographic strength is the highest. In other words, a cryptographically strong RNG will most definitely not p...
Structs versus classes
...scenarios.
Structs consume less heap memory (because they are smaller and more easily compacted, not because they are "on the stack"). But they take longer to copy than a reference copy. I don't know what your performance metrics are for memory usage or speed; there's a tradeoff here and you're the...
git:// protocol blocked by company, how can I get around that?
...ur firewall blocking the git: protocol port (9418), then you should make a more persistent change so you don't have to remember to issue commands suggested by other posts for every git repo.
The below solution also just works for submodules which might also be using the git: protocol.
Since the gi...
How to copy a file to multiple directories using the gnu cp command
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Thanks for the answer! Now that I think about it a bit more, without extra flags (which do not exist) cp will not know what is the source and what is the DEST dir.
– Tom Feiner
Oct 12 '08 at 16:39
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How do I copy an entire directory of files into an existing directory using Python?
... from a directory that contains a directory named bar (containing one or more files) and a directory named baz (also containing one or more files). Make sure there is not a directory named foo .
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Why declare a struct that only contains an array in C?
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Beware of doing this with arrays, more than say 16 or 32 bytes, for functions that don't inline: it's more efficient to pass them by const-reference, unless the callee already needs a tmp copy it can destroy. If the call / return don't optimize away, a mediu...
Why are nested weights bad for performance? Alternatives?
...ic is the same, it can help. Unfortunately I find droid's ConstraintLayout more heavy/verbose to use than iOS' AutoLayout
– AdricoM
Jan 15 '18 at 15:19
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AddRange to a Collection
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Yeah - I was giving it more as rationale for why I don't think there is a problem with doing this. Just realize it will be less efficient than the List<T> version (since the list<T> can pre-allocate)
– Reed Copsey...
Extract digits from a string in Java
... nice short code. A linear search might be faster but i think yours makes more sense.
– kasten
Oct 27 '10 at 7:46
22
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Is there a 'foreach' function in Python 3?
...P, C#, ...) does basically the same as pythons "for" statement.
These are more or less equivalent:
// PHP:
foreach ($array as $val) {
print($val);
}
// C#
foreach (String val in array) {
console.writeline(val);
}
// Python
for val in array:
print(val)
So, yes, there is a "foreach" ...