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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...
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 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 convert a IPython Notebook into a Python file via commandline?
...
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 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 does the Brainfuck Hello World actually work?
...ng pointer from cell X to cell X-1
...[0][0][*0*][1][0]...
2. Input
To read character you use comma ,. What it does is: Read character from standard input and write its decimal ASCII code to the actual cell.
Take a look at ASCII table. For example, decimal code of ! is 33, while a is 97.
Well,...
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...
What does it mean by buffer?
...ontinue to store output in the buffer. When the consumer speeds up, it can read from the buffer. The buffer is there in the middle to bridge the gap.
If you average out the definitions at http://en.wiktionary.org/wiki/buffer, I think you'll get the idea.
For proof that we really did "have to wal...