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Is there a NumPy function to return the first index of something in an array?
... list using a list comprehension: [find_list.index(index_list[i]) for i in range(len(index_list))]
– Matt Wenham
Apr 29 '19 at 21:24
1
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How can I get useful error messages in PHP?
... get a blank screen use IEs "view" -> "source" menu options to view the raw output.
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Difference between \n and \r?
...mode terminals (typically emulating even-older printing ones as above), in raw mode, \r and \n act similarly (except both in terms of the cursor, as there is no carriage or roller;-)
In practice, in the modern context of writing to a text file, you should always use \n (the underlying runtime will...
Database sharding vs partitioning
...mes faster simply because of partition pruning.
Partitioning Strategies
Range
Hash
List
You can read their text and visualize their images which explain everything pretty well.
And lastly, it is important to understand that databases are extremely resource intensive:
CPU
Disk
I/O
Memory
Ma...
How does free know how much to free?
...mory region in whatever form relevant to the allocator in use, for example raw size, or a node in a binary tree used to track allocations, or a count of memory "units" in use.
free will not fail if you "rename" the pointer, or duplicate it in any way. It is not however reference counted, and only t...
What is the difference between 'typedef' and 'using' in C++11?
... { case 0: (void)Foo{}; }
// ^^^^^^^^^^^^^^^ init-statement
// C++20 (range-based for loop initialization statements).
std::vector<int> v{1, 2, 3};
for(typedef int Foo; Foo f : v) { (void)f; }
// ^^^^^^^^^^^^^^^ init-statement
whereas an alias-declaration is not an init-statement, and m...
How do I determine whether an array contains a particular value in Java?
...t this is still better then "rolling your own" and easier to read then the raw java way.
– Jason
Dec 7 '12 at 17:48
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What uses are there for “placement new”?
...our. It is more consistent to use operator new/operator delete to allocate raw memory inteded for use by placement new.
– CB Bailey
Mar 21 '10 at 15:10
32
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Calculate the number of business days between two dates?
...ference = (int)to.Subtract(from).TotalDays;
return Enumerable
.Range(1, dayDifference)
.Select(x => from.AddDays(x))
.Count(x => x.DayOfWeek != DayOfWeek.Saturday && x.DayOfWeek != DayOfWeek.Sunday);
}
This was my original submission:
public int GetWorkin...
What is the best way to compute trending topics or tags?
... @nixuz - am I missing something: fazscore(0.8,map(lambda x:40,range(0,200))).score(1) == 0 (for any values)?
– kͩeͣmͮpͥ ͩ
Dec 17 '10 at 5:03
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