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What's the safest way to iterate through the keys of a Perl hash?
...ng each may in some way have unintended side effects. So, is that true, and is one of the two following methods best, or is there a better way?
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Performance of foreach, array_map with lambda and array_map with static function
...2 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
$ret = $func($numbers);
$t1 = microtime(1);
return array($t1 - $t0, $ret);
}
function useForeach($numbers) {...
How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
...ernative is to create an intermediate Service layer between the Controller and the Repository that could expose methods which initialize lazy collections.
Update:
Please note that the above solution is easy, but results in two distinct queries to the database (one for the user, another one for its r...
When are C++ macros beneficial? [closed]
The C preprocessor is justifiably feared and shunned by the C++ community. In-lined functions, consts and templates are usually a safer and superior alternative to a #define .
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How can I check if a scrollbar is visible?
...
Note that on Macs the scrollbar floats over the content and disappears when not in use. On Windows it is always visible and takes up horizontal space. Therefor, just because content can be scrolled (which this function detects) does not mean that a scrollbar is necessarily present...
Convert string to variable name in JavaScript
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@WojciechBednarski: Don't confuse scope and context. this is context, what it points to depends on how the function is called. In JS, 50% of the time this is window unless you enable strict mode and this becomes undefined and will throw an error. Scope is something...
CSS performance relative to translateZ(0)
...n element is 3D by using transform: translateZ(0) to speed up animations and transitions. I was wondering if there are implications to using this transform in the following manner:
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How to use z-index in svg elements?
...Fiddle.
Solution (alternative)
The tag use with the attribute xlink:href and as value the id of the element. Keep in mind that might not be the best solution even if the result seems fine. Having a bit of time, here the link of the specification SVG 1.1 "use" Element.
Purpose:
To avoid re...
What are the security risks of setting Access-Control-Allow-Origin?
...n. This basically means that any site can send an XHR request to your site and access the server’s response which would not be the case if you hadn’t implemented this CORS response.
So any site can make a request to your site on behalf of their visitors and process its response. If you have som...
how can you easily check if access is denied for a file in .NET?
...heck unless I have to. Is there a file access property I can check before hand?
6 Answers
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