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Understanding the map function
...unctions based on length of iterators .. calling functions has overhead .. Watch 6:00 youtube.com/watch?v=SiXyyOA6RZg&t=813s
– anati
Nov 22 '17 at 10:47
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Performance of FOR vs FOREACH in PHP
...he time difference is going to be minimal in most cases.
The big thing to watch for is:
for ($i = 0; $i < count($array); $i++) {
That's an expensive loop, since it calls count on every single iteration. So long as you're not doing that, I don't think it really matters...
As for the reference...
How much is the overhead of smart pointers compared to normal pointers in C++?
...r mostly on the subsystem API boundary.
If you want to learn more you can watch Nicolai M. Josuttis good talk about "The Real Price of Shared Pointers in C++" https://vimeo.com/131189627
It goes deep into the implementation details and CPU architecture for write barriers, atomic locks etc. once lis...
How to change package name of Android Project in Eclipse?
...new package name.
Select "update references".
Press OK and you're done and watch out also what should be done to replace the new name.
Don't forget to also update the layout XML files with the new package name. You might have a custom View. Look for them.
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How do I enlarge an EER Diagram in MySQL Workbench?
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Then ,you can also export a single page pdf. I prefer watching at the db as a big picture...
– giuseppe
Jan 14 '13 at 13:18
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AWS ssh access 'Permission denied (publickey)' issue [closed]
...y have the root user created by default.
See also: http://www.youtube.com/watch?v=WBro0TEAd7g
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log4j configuration via JVM argument(s)?
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Watch out if using Log4j 2 as the property name and syntax changed. See this answer.
– José Andias
Aug 22 '16 at 11:12
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What's the difference between integer class and numeric class in R
... have a whole number, but a test of how the data are stored.
One thing to watch out for is that the colon operator, :, will return integers if the start and end points are whole numbers. For example, 1:5 creates an integer vector of numbers from 1 to 5. You don't need to append the letter L.
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'echo' without newline in a shell script
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@alper The % is your shell prompt. Try this, and watch carefully: printf hello; sleep 5
– Keith Thompson
May 12 at 21:21
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Getting “cannot find Symbol” in Java project in Intellij
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Watch out - if you happen to have any changes and they are not committed, they'll be lost. :)
– Nikola
Jul 10 '19 at 13:19
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