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How to make a class JSON serializable
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Do you have an idea about the expected output? For example, will this do?
>>> f = FileItem("/foo/bar")
>>> magic(f)
'{"fname": "/foo/bar"}'
In that case you can merely call json.dumps(f.__dict__).
If you want more customized output then you will ha...
How to read and write INI file with Python3?
...config.set('section_b', 'not_found_val', str(404))" because the parameters for "set" have to be strings. Excellent example, thanks!
– Mr Ed
Dec 29 '18 at 13:42
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How do you round a floating point number in Perl?
... floor()?
Trig functions?
Remember that int() merely truncates toward 0. For rounding to a certain number of digits, sprintf() or printf() is usually the easiest
route.
printf("%.3f", 3.1415926535); # prints 3.142
The POSIX module (part of the standard Perl distribution) implements
ce...
get current url in twig template?
I looked around for the code to get the current path in a Twig template (and not the full URL), i.e.
I don't want http://www.sitename.com/page , I only need /page .
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Regular expression to allow spaces between words
...ows letters and numbers. The regex below works great, but it doesn't allow for spaces between words.
15 Answers
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How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
...these macros must only be defined if explicitly requested.
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
... now PRIu64 will work
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Aren't Python strings immutable? Then why does a + “ ” + b work?
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@delnan and so, what? For the sake of showing that strings and lists behave differently you can assume that a = a+"Foo" is the same as a.append(something). In any case it's not the same. Obviously. Were you happier reading a.extend([something]) in...
When is assembly faster than C?
One of the stated reasons for knowing assembler is that, on occasion, it can be employed to write code that will be more performant than writing that code in a higher-level language, C in particular. However, I've also heard it stated many times that although that's not entirely false, the cases wh...
C++ project organisation (with gtest, cmake and doxygen)
... a library as opposed to an actual application. Your headers are the
basis for users to interact with what you offer and must be
installed. This means they have to be in a subdirectory (no-one wants
lots of headers ending up in top-level /usr/include/) and your
headers must be able to include themse...
Algorithm to detect corners of paper sheet in photo
...orners of an invoice/receipt/sheet-of-paper in a photo? This is to be used for subsequent perspective correction, before OCR.
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