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Does the perfomance of "filter then map" and "map then filter" differ in a Stream?


Does the perfomance of "filter then map" and "map then filter" differ in a Stream?

By : user3100513
Date : January 12 2021, 07:00 PM
With these it helps In this specific example, where calling Person.getName() has basically no cost at all, it doesn't matter, and you should use what you find the most readable (and filtering after could even be marginally faster, since as TJ mentions, the mapping operation is part of the filtering operation).
If the mapping operation has a significant cost however, then filtering first (if possible) is more efficient, since the stream won't have to map the elements that have been filtered out.
code :


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Rake aborted! Invalid CSS after " filter: progid": expected ";", was ":DXImageTransfo..."

Rake aborted! Invalid CSS after " filter: progid": expected ";", was ":DXImageTransfo..."


By : Sean Chen
Date : March 29 2020, 07:55 AM
wish help you to fix your issue This appears to be a problem with Microsoft Gradients. I kept getting errors based off only having Microsoft gradients in my css files. I fixed this by having them all deleted.
How to create an "add_filter" function if "filter name" is in the form of "$filter" in app

How to create an "add_filter" function if "filter name" is in the form of "$filter" in app


By : Chuzy Noies
Date : March 29 2020, 07:55 AM
it fixes the issue The filter name, based on the methods second parameter $integer, is either bbp_get_topic_post_count_int (when $integer is true) or bbp_get_topic_post_count (when $integer is false, which is the default parameter value of $integer, if there isn't a value for it at method call).
The value of $filter is assigned here:
code :
$filter = ( true === $integer ) ? 'bbp_get_topic_post_count_int' : 'bbp_get_topic_post_count';
add_filter( 'bbp_get_topic_post_count_int', 'bbp_get_topic_post_count', 10, 2 );
add_filter( 'bbp_get_topic_post_count', 'bbp_get_topic_post_count', 10, 2 );
Will Java 8 create a new List after using Stream "filter" and "collect"?

Will Java 8 create a new List after using Stream "filter" and "collect"?


By : villenator
Date : March 29 2020, 07:55 AM
To fix this issue The call to collect with Collectors.toList() will create a new list. The original list is not effected by the streaming.
Scrapy filter identical urls differ in "http" and "https"

Scrapy filter identical urls differ in "http" and "https"


By : user3371292
Date : March 29 2020, 07:55 AM
With these it helps There is no generic way. Depending on your specific circumstances different solutions may apply, or there may be no good solution.
If the issue is with a specific domain, you can just write your spider so that it will use the right protocol when yielding a new request.
What is the difference between "--tree-filter" and "--index-filter" in the "git filter-branch&q

What is the difference between "--tree-filter" and "--index-filter" in the "git filter-branch&q


By : Uresh Dassanayake
Date : March 29 2020, 07:55 AM
I hope this helps you . The short version is that --tree-filter checks out each commit into a temporary directory, runs your filter command, and builds a new commit from whatever is now in the temporary directory; while --index-filter copies each commit into the index, runs your filter command, and builds a new commit from whatever is now in the index.
Copying a commit to the index is much1 faster than checking out the commit. Building a commit from the index is faster than building a commit from a directory. As a result, using the index filter is much faster than using the tree filter. It's not as easy to script for, though.
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