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Why is a C++ Vector called a Vector?
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But array will also don't use heap allocation which makes moving it less efficiently. We also have std::valarray, btw.
– sellibitze
Sep 25 '09 at 15:13
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In Laravel, the best way to pass different types of flash messages in the session
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Follow these steps below:
Create a file: "app/Components/FlashMessages.php"
namespace App\Components;
trait FlashMessages
{
protected static function message($level = 'info', $message = null)
{
if (session()->has('messages')) {
$messages = session()->pull('messages'...
pythonic way to do something N times without an index variable?
... you don't intend to use. In python these identifiers don't takes memor or allocate space like variables do in other languages. It's easy to forget that. They're just names that point to objects, in this case an integer on each iteration.
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What is the copy-and-swap idiom?
...t's a terrible thing.
In our case, the core of it is only two lines (the allocation and the copy), but with more complex resources this code bloat can be quite a hassle. We should strive to never repeat ourselves.
(One might wonder: if this much code is needed to manage one resource correctly, wh...
List comprehension in Ruby
...ators and co routines to do all calculations in a streaming manner without allocating storage at all (except temp variables) until (iff) the results land in an array variable - this is the purpose of the square brackets in the python example, to collapse the comprehension to a set of results. Ruby h...
In where shall I use isset() and !empty()
...riables and not just values, so isset("foobar") will raise an error. As of PHP 5.5, empty supports both variables and expressions.
So your first question should rather be if isset returns true for a variable that holds an empty string. And the answer is:
$var = "";
var_dump(isset($var));
The typ...
What are the applications of binary trees?
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Treap - Randomized data structure used in wireless networking and memory allocation.
T-tree - Though most databases use some form of B-tree to store data on the drive, databases which keep all (most) their data in memory often use T-trees to do so.
The reason that binary trees are used more of...
PHP foreach loop key value
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1834703%2fphp-foreach-loop-key-value%23new-answer', 'question_page');
}
);
Post as a guest
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Does file_get_contents() have a timeout setting?
... link may take more than 15 minutes to process. Now, I worry about whether PHP's file_get_contents() has a timeout period?
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How do I make UITableViewCell's ImageView a fixed size even when the image is smaller
...CellIdentifier];
if (cell == nil) {
cell = [[[SizableImageCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
cell.textLabel.text = ...
cell.detailTex...