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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...stribution across the sets, because each memory address is as likely to be read (I said ideally).
It's clear that overlaps can occur. In case of a cache miss, the memory is read in the cache and the old value is replaced. Remember each set has a number of lines, out of which the least recently used...
How to create directory automatically on SD card
... the directory you want (assuming you're using API 8 or greater).
You can read more in the SDK documentation.
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What is a segmentation fault?
...ou are doing something wrong with memory – accessing variable that has already been freed, writing to a read-only portion of the memory, etc. Segmentation fault is essentially the same in most languages that let you mess with the memory management, there is no principial difference between segfaul...
Is there any async equivalent of Process.Start?
...s Exited, OutputDataReceived, ErrorDataReceived) are called on separated thread.
– KevinBui
Jan 21 '18 at 5:03
4
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How do I get a plist as a Dictionary in Swift?
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In swift 3.0 Reading from Plist.
func readPropertyList() {
var propertyListFormat = PropertyListSerialization.PropertyListFormat.xml //Format of the Property List.
var plistData: [String: AnyObject] = [:] //Our data
...
Using boolean values in C
...d, use them only for initialization. Never ever write something like
if (ready == TRUE) ...
while (empty == FALSE) ...
These can always be replaced by the clearer
if (ready) ...
while (!empty) ...
Note that these can actually reasonably and understandably be read out loud.
Give your boolean...
How do I convert a IPython Notebook into a Python file via commandline?
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This answer opens the possibility to read tags and extract only those cells that have it. Harder to do via the command line alone.
– Pablo Adames
Aug 9 at 23:57
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How to delete duplicate lines in a file without sorting it in Unix?
... '$!N; /^(.*)\n\1$/!P; D' means "If you're not at the last line, read in another line. Now look at what you have and if it ISN'T stuff followed by a newline and then the same stuff again, print out the stuff. Now delete the stuff (up to the newline)."
– Beta
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How do I install Python OpenCV through Conda?
... utility.
Do some testing to confirm OpenCV and FFMPEG are now working.
(Read on for the detail instructions...)
Prerequisite
Install Anaconda
Anaconda is essentially a nicely packaged Python IDE that is shipped with tons of useful packages, such as NumPy, Pandas, IPython Notebook, etc. It seem...
How can I read command line parameters from an R script?
...s$options
file <- args$args
if(opt$count_lines) {
print(paste(length(readLines(file)) * opt$factor))
}
Given an arbitrary file blah.txt with 23 lines.
On the command line:
Rscript script.R -h outputs
Usage: script.R [options] file
Options:
-n, --count_lines
Count...