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Retrieve filename from file descriptor in C
Is it possible to get the filename of a file descriptor (Linux) in C?
7 Answers
7
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Passing a std::array of unknown size to a function
...ot currently valid C++ even though it compiles in GCC7 with the C++17 flag set. From reading here, function parameters declared as auto are part of the Concepts TS which should eventually be part of C++20.
– Fibbles
May 19 '18 at 17:44
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How to crop circular area from bitmap in Android
...t rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
// canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2,
bit...
“#include” a text file in a C program as a char[]
...ncludable input_file output_file)
file(READ ${input_file} content)
set(delim "for_c++_include")
set(content "R\"${delim}(\n${content})${delim}\"")
file(WRITE ${output_file} "${content}")
endfunction(make_includable)
# Use like
make_includable(external/shaders/cool.frag generated/coo...
How to generate a random integer number from within a range
...tervals of the same size are equally likely and independent. For a finite set of values, this implies a uniform distribution and also ensures that the values of rand() are nicely scattered.
This means that the only correct way of changing the range of rand() is to divide it into boxes; for example...
Is there a regular expression to detect a valid regular expression?
...renthesis through brute force but you can't ever match an arbitrarily long set of nested brackets.
This capability is often referred to as counting, because you're counting the depth of the nesting. A regex by definition does not have the capability to count.
I ended up writing "Regular Expr...
How to convert .crt to .pem [duplicate]
...with the OpenSSL library
http://www.openssl.org/
Windows binaries can be found here:
http://www.slproweb.com/products/Win32OpenSSL.html
Once you have the library installed, the command you need to issue is:
openssl x509 -in mycert.crt -out mycert.pem -outform PEM
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How to use filter, map, and reduce in Python 3
filter , map , and reduce work perfectly in Python 2. Here is an example:
7 Answers
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Adding iOS UITableView HeaderView (not section header)
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UITableView has a tableHeaderView property. Set that to whatever view you want up there.
Use a new UIView as a container, add a text label and an image view to that new UIView, then set tableHeaderView to the new view.
For example, in a UITableViewController:
-(void...
What is the easiest way to remove the first character from a string?
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15 Answers
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