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How can I use an array of function pointers?
... here in the array the numbering of the function pointers will be starting from 0 same as in general arrays. So in above example fun1 can be called if option=0, fun2 can be called if option=1 and fun3 can be called if option=2.
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How to determine CPU and memory consumption from inside a process?
I once had the task of determining the following performance parameters from inside a running application:
9 Answers
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How to properly ignore exceptions
...boardInterrupt, SystemExit and stuff like that, which are derived directly from exceptions.BaseException, not exceptions.Exception.
See documentation for details:
try statement
exceptions
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How can I check file size in Python?
....stat. You can get it by either using pathlib (Python 3.4+):
>>> from pathlib import Path
>>> Path('somefile.txt').stat()
os.stat_result(st_mode=33188, st_ino=6419862, st_dev=16777220, st_nlink=1, st_uid=501, st_gid=20, st_size=1564, st_atime=1584299303, st_mtime=1584299400, st_ct...
Displaying the build date
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The most reliable method turns out to be retrieving the linker timestamp from the PE header embedded in the executable file -- some C# code (by Joe Spivey) for that from the comments to Jeff's article:
public static DateTime GetLinkerTime(this Assembly assembly, TimeZoneInfo target = null)
{
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About .bash_profile, .bashrc, and where should alias be written in? [duplicate]
...aving the commands source ~/.profile and source ~/.bashrc will not source from the newly logged in user's home folder but the home folder of the user you signed into your computer with. Maybe there is another solution than using ~/
– John
Aug 27 at 22:07
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Why is a git 'pull request' not called a 'push request'?
... the target repository grabbing your changes to be present there (git pull from the other repo).
A "pull request" is you requesting the target repository to please grab your changes.
A "push request" would be the target repository requesting you to push your changes.
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Downloading Java JDK on Linux via wget is shown license page instead
When I try to download Java from Oracle I instead end up downloading a page telling me that I need agree to the OTN license terms.
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When to use PNG or JPG in iPhone development?
... extra CPU energy to display. However, large PNGs may take longer to read from storage than more compressed image formats, and thus be slower to display.
JPG's are smaller to store, but lossy (amount depends on compression level), and to display them requires a much more complicated decoding algor...
Why should I use the keyword “final” on a method parameter in Java?
... Use the keyword final when you want the compiler to prevent a
variable from being re-assigned to a different object.
Whether the variable is a static variable, member variable, local variable, or argument/parameter variable, the effect is entirely the same.
Example
Let’s see the effect in ...