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std::function vs template
...d statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed through a vtable).
Yes, it is true that template support is not perfect, and C++11 is still lacking a support for c...
What is the purpose of setting a key in data.table?
...le, ZIP, of all the zip codes in the US (>33,000) along with associated information (city, state, population, median income, etc.). If I want to look up the information for a specific zip code, the search (filter) is about 1000 times faster if I setkey(ZIP,zipcode) first.
Another benefit has to ...
What's the difference between “groups” and “captures” in .NET regular expressions?
...y of cases I think he missed the boat. In the short term (?:.*?(collection info)){4,20} increases efficiency by more that a few hundred percent.
– user557597
Feb 28 '17 at 0:51
1
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What are the effects of exceptions on performance in Java?
... nice. ~70% creating the exception, ~30% throwing it. good info.
– chaqke
May 13 '15 at 19:01
1
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Single Page Application: advantages and disadvantages [closed]
... experience with Single Page Apps (namely, AngularJS 1.x) - so I have more info to share.
In my opinion, the main disadvantage of SPA applications is SEO, making them limited to kind of "dashboard" apps only. In addition, you are going to have a much harder times with caching, compared to classic ...
How do I tell git to always select my local version for conflicted merges on a specific file?
..., will only set directives if not already set
Finally it examines $GIT_DIR/info/attributes. This file is used to override the in-tree settings. It will overwrite <dir>/.gitattributes directives.
By "combining", I mean "aggregate" multiple merge driver.
Nick Green tries, in the comments, to a...
How to strip HTML tags from a string in SQL Server?
... for implementing a CLR UDF function for a massive performance boost. More info on doing so here: stackoverflow.com/questions/34509/…
– RedFilter
Jan 19 '10 at 14:16
10
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Is there a list of screen resolutions for all Android based phones and tablets? [closed]
...ng on any Android projects in months and thus I haven't been updating this information, so no.
– Oliver Pearmain
Apr 2 '15 at 8:14
...
How is std::function implemented?
...pe, and cast them to a universal function pointer type. Therefore the type information is erased.
I've cobbled up a simplified version of that. Hope it'll help
#include <iostream>
#include <memory>
template <typename T>
class function;
template <typename R, typename... Args&...
How to fix “Headers already sent” error in PHP
...e.
summary ⇊
Otherwise the call fails:
Warning: Cannot modify header information - headers already sent (output started at script:line)
Some functions modifying the HTTP header are:
header / header_remove
session_start / session_regenerate_id
setcookie / setrawcookie
Output can be:
Uni...