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How does the Java 'for each' loop work?
...est A: 326,373,762 nanoseconds
Test B: 202,555,566 nanoseconds
B faster by 123,818,196 nanoseconds (37.437545972215744% faster)
I also ran this for an Integer array, and indexes are still the clear winner, but only between 18 and 25 percent faster.
For collections, iterators are faster than index...
How do JavaScript closures work?
...s to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
...
vs
...
123
The original intention in C++98 was that you should use <cstdint> in C++, to avoid pollu...
What is a “callback” in C and how are they implemented?
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123
Here is an example of callbacks in C.
Let's say you want to write some code that allows regis...
How do you parse and process HTML/XML in PHP?
... fluent API.
It leverages XPath and the fluent programming pattern to be fun and effective.
3rd-Party (not libxml-based)
The benefit of building upon DOM/libxml is that you get good performance out of the box because you are based on a native extension. However, not all 3rd-party libs go down...
How can I use Autolayout to set constraints on my UIScrollview?
.... Check the entire constraint list for those views here: cl.ly/image/3l061i123j2i
– backslash-f
Apr 14 '15 at 19:51
1
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Read an Excel file directly from a R script
....7239 148.0940 255.0124 100
# readxl 122.0238 122.8448 132.4021 123.6964 130.2881 214.5138 100
# gdata 2004.4745 2042.0732 2087.8724 2062.5259 2116.7795 2425.6345 100
So readxl is the winner, with openxlsx competitive and gdata a clear loser. Taking each measure relative to th...
What are the effects of exceptions on performance in Java?
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Just for fun I disabled fillInStackTrace in the exception test. Here are the times now: Control 347 Exception 351 Result 364 Sentinel 355
– Fuwjax
Apr 10 '11 at 10:52
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Git workflow and rebase vs merge questions
.... At best, you have to go back and amend each of the affected commits. Not fun.
After a rebase, it's impossible to determine what was originally part of the commits and what was introduced as a result of bad conflict resolution.
*It can be possible to undo a rebase if you can dig the old refs out...
Why doesn't Java allow overriding of static methods?
...'t have any employees assigned to it yet? This is quite logically a static function.
But it doesn't work.
And yes, yes, I can think of any number of ways to rewrite the above code to make it work. My point is not that it creates an unsolvable problem, but that it creates a trap for the unwary prog...