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Which is faster: Stack allocation or Heap allocation
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501
Stack allocation is much faster since all it really does is move the stack pointer.
Using memo...
Best way to select random rows PostgreSQL
... AS min_id -- minimum id <= current min id
, 5100000 AS id_span -- rounded up. (max_id - min_id + buffer)
)
SELECT *
FROM (
SELECT p.min_id + trunc(random() * p.id_span)::integer AS id
FROM params p
,generate_series(1, 1100) g -- 1000 + ...
What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
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edited Jun 17 '13 at 2:20
icktoofay
114k1717 gold badges222222 silver badges220220 bronze badges
answe...
Have a div cling to top of screen if scrolled down past it [duplicate]
I have a div which, when my page is first loaded, is about 100px from the top (it holds some buttons etc. for the page).
4 ...
How to use UIScrollView in Storyboard
I have a scroll view with content that is 1000px tall and would like to be able to lay it out for easy design on the storyboard.
I know it can be done programmatically but I really want to be able to see it visually. Every time I put a scroll view on a view controller it won't scroll. Is it possib...
Remove duplicate elements from array in Ruby
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edited May 20 at 4:57
the Tin Man
147k3131 gold badges192192 silver badges272272 bronze badges
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UITableView set to static cells. Is it possible to hide some of the cells programmatically?
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You are looking for this solution :
StaticDataTableViewController 2.0
https://github.com/xelvenone/StaticDataTableViewController
which can show/hide/reload any static cell(s) with or without animation!
[self cell:self.outletToMyStaticCell1 setHidden:hide];
[self cell:self.outletToMyStatic...
What is the meaning of “non temporal” memory accesses in x86
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150
Non-Temporal SSE instructions (MOVNTI, MOVNTQ, etc.), don't follow the normal cache-coherency ru...
In JavaScript, does it make a difference if I call a function with parentheses?
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160
window.onload = initAll();
This executes initAll() straight away and assigns the function's ...
REST, HTTP DELETE and parameters
...rom your use of the DELETE method, this is not the case.
HTTP error code 409/Conflict should be used for situations where there is a conflict which prevents the RESTful service to perform the operation, but there is still a chance that the user might be able to resolve the conflict himself. A pre-d...