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Combining C++ and C - how does #ifdef __cplusplus work?
...tive.
Now, specifically regarding your numbered questions:
Regarding #1: __cplusplus will stay defined inside of extern "C" blocks. This doesn't matter, though, since the blocks should nest neatly.
Regarding #2: __cplusplus will be defined for any compilation unit that is being run through the C...
python: how to identify if a variable is an array or a scalar
...o uses numpy often, I'd recommend a very pythonic test of:
if hasattr(N, "__len__")
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How to clear the interpreter console?
...s file in your python search path:
# wiper.py
class Wipe(object):
def __repr__(self):
return '\n'*1000
wipe = Wipe()
Then you can do this from the interpreter all you like :)
>>> from wiper import wipe
>>> wipe
>>> wipe
>>> wipe
...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
...s to Ruby 1.9.2 no longer make the current directory . part of your LOAD_PATH . I have a non-trivial number of Rakefiles that assume that . is part of the LOAD_PATH , so this broke them (they reported "no such file to load" for all require statements that based off the project path). Was there...
How do I change the working directory in Python?
... """Context manager for changing the current working directory"""
def __init__(self, newPath):
self.newPath = os.path.expanduser(newPath)
def __enter__(self):
self.savedPath = os.getcwd()
os.chdir(self.newPath)
def __exit__(self, etype, value, traceback):
...
using lodash .groupBy. how to add your own keys for grouped output?
...ame": "eddie",
"color": "green",
"age": "77"
}];
console.log(
_.chain(data)
// Group the elements of Array based on `color` property
.groupBy("color")
// `key` is group's name (color), `value` is the array of objects
.map((value, key) => ({ color: key, users: valu...
MySQL: What's the difference between float and double?
...00002 | 1.6900000000 |
This is using MySQL 6.7
Query:
SELECT
float_1 + float_2 as 'float add',
double_1 + double_2 as 'double add',
decimal_1 + decimal_2 as 'decimal add',
float_1 * float_2 as 'float multiply',
double_1 * double_2 as 'double multiply',
decimal_1 * decim...
Python: access class property from string [duplicate]
...k just perfectly if source names ANY attribute of self, including the other_data in your example.
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putting current class as return type annotation [duplicate]
...he annotations at function definition time. Instead, they are preserved in __annotations__ in string form. This is called Postponed Evaluation of Annotations, introduced in PEP 563.
Also note:
Deprecation policy
Starting with Python 3.7, a __future__ import is required to use the
descri...
Union of dict objects in Python [duplicate]
...
How is tmp = dict(y); tmp.update(x); do_something(tmp) simpler?
– Mechanical snail
Aug 7 '12 at 6:04
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