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In what order are Panels the most efficient in terms of render time and performance?
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The child does not have to (and frequently does not) fill the entire
allocated space. Control is then returned to the parent Panel and the
layout process is complete.
From Measuring and Arranging Children
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Functional, Declarative, and Imperative Programming [closed]
...perative IO monad (note: not all monads are imperative!) implicit in space allocation, and timing is state relative to the imperative real world. Using lazy even with optional eager coproducts leaks "laziness" into inner coproducts, because with lazy the laziness incorrectness originates from the ou...
Repeat String - Javascript
...even a single character to a string requires creation of, including memory allocation for and copying to, an entire new string.
Unfortunately, the accepted answer on this page is wrong, where "wrong" means by a performance factor of 3x for simple one-character strings, and 8x-97x for short strings ...
Using Auto Layout in UITableView for dynamic cell layouts & variable row heights
...reuseIdentifier];
if (!cell) {
cell = [[YourTableViewCellClass alloc] init];
[self.offscreenCells setObject:cell forKey:reuseIdentifier];
}
// Configure the cell with content for the given indexPath, for example:
// cell.textLabel.text = someTextForThisCell;
// ....
Further understanding setRetainInstance(true)
....MyActivity@405196b0
09-29 13:23:04.851: DEBUG/dalvikvm(4790): GC_EXTERNAL_ALLOC freed 49K, 51% free 2686K/5379K, external 0K/0K, paused 45ms
09-29 13:23:04.881: INFO/TESTING - MYACTIVITY(4790): onCreate - com.example.MyActivity@405196b0
09-29 13:23:04.881: INFO/TESTING - MYACTIVITY(4790): onStart -...
When to use volatile with multi threading?
...er and the first comment. "volatile is useless" is akin to "manual memory allocation is useless". If you can write a multithreaded program without volatile it is because you stood on the shoulders of people who used volatile to implement threading libraries.
– Ben Jackson
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How do I prevent site scraping? [closed]
... the bad one. If you want to prevent this kind of thing, you need to add a token associated with IP in the URL. Something like jail.php?t=hoeyvm and in database you have an association of hoeyvm and the IP who requested the page.
– HoLyVieR
Jul 5 '10 at 12:41
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How does PHP 'foreach' actually work?
...ns is that 'FYFY' has the same hash as the removed element 'EzFY', and the allocator happens to reuse the same memory location to store the element. So foreach ends up directly jumping to the newly inserted element, thus short-cutting the loop.
Substituting the iterated entity during the loop
One ...
What is Node.js? [closed]
...like everyone else? In Node.js, a new connection is just a very small heap allocation. Spinning up a new process takes significantly more memory, a megabyte on some platforms. But the real cost is the overhead associated with context-switching. When you have 10^6 kernel threads, the kernel has to do...
Why is it slower to iterate over a small string than a small list?
...s just retrieves the result from a table of stored 1-character strings, so allocation costs for those are only incurred once.
– user2357112 supports Monica
May 26 '14 at 7:56
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