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snprintf and Visual Studio 2010

... the expected behavior for snprintf: int snprintf( char* buffer, std::size_t buf_size, const char* format, ... ); Writes at most buf_size - 1 characters to a buffer. The resulting character string will be terminated with a null character, unless buf_size is zero. If buf_size is zero, nothi...
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How do I add custom field to Python log format string?

... pass the extra info with every logging call: import logging extra = {'app_name':'Super App'} logger = logging.getLogger(__name__) syslog = logging.StreamHandler() formatter = logging.Formatter('%(asctime)s %(app_name)s : %(message)s') syslog.setFormatter(formatter) logger.setLevel(logging.INFO) l...
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Post-install script with Python setuptools

...from setuptools.command.install import install from subprocess import check_call class PreDevelopCommand(develop): """Pre-installation for development mode.""" def run(self): check_call("apt-get install this-package".split()) develop.run(self) class PreInstallCommand(insta...
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Best practices for circular shift (rotate) operations in C++

... it to rotate by the width of the type (using fixed-width types like uint32_t). #include <stdint.h> // for uint32_t #include <limits.h> // for CHAR_BIT // #define NDEBUG #include <assert.h> static inline uint32_t rotl32 (uint32_t n, unsigned int c) { const unsigned int mask...
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How do I test an AngularJS service with Jasmine?

...hat passed // for logging? Let's make it String-readable... function _parseStuffIntoMessage(stuff) { var message = ""; if (typeof stuff !== "string") { message = JSON.stringify(stuff) } else { message = stuff; } return message; } /** * @summary * Wri...
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How to get method parameter names?

...ious code object properties for you. >>> inspect.getfullargspec(a_method) (['arg1', 'arg2'], None, None, None) The other results are the name of the *args and **kwargs variables, and the defaults provided. ie. >>> def foo(a, b, c=4, *arglist, **keywords): pass >>> ins...
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How to rename items in values() in Django?

... could use the extra method: MyModel.objects.extra( select={ 'renamed_value': 'cryptic_value_name' } ).values( 'renamed_value' ) This basically does SELECT cryptic_value_name AS renamed_value in the SQL. Another option, if you always want the renamed version but the db has the cryptic nam...
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Python nested functions variable scoping [duplicate]

...When I run your code I get this error: UnboundLocalError: local variable '_total' referenced before assignment This problem is caused by this line: _total += PRICE_RANGES[key][0] The documentation about Scopes and Namespaces says this: A special quirk of Python is that – if no global st...
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How to convert JSON data into a Python object

...E With Python3, you can do it in one line, using SimpleNamespace and object_hook: import json from types import SimpleNamespace data = '{"name": "John Smith", "hometown": {"name": "New York", "id": 123}}' # Parse JSON into an object with attributes corresponding to dict keys. x = json.loads(data, ...
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C++ Redefinition Header Files (winsock2.h)

...list that <windows.h> is included after <winsock2.h> or define _WINSOCKAPI_ first: #define _WINSOCKAPI_ // stops windows.h including winsock.h #include <windows.h> // ... #include "MyClass.h" // Which includes <winsock2.h> See also this. ...