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Python list iterator behavior and next(iterator)
Consider:
6 Answers
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Default initialization of std::array?
...; the C++ language guarantees you that any object for which you do not provide an explicit initializer will be default initialized (C++11 §8.5/11). That includes objects of type std::array<T, N> and T[N].
Be aware that there are types for which default initialization has no effect and leaves...
Any equivalent to .= for adding to beginning of string in PHP?
... that in there you don't need to worry about passing in a null value by accident.
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Postgres: “ERROR: cached plan must not change result type”
...set_column_information will fix things in the short term if you want to avoid restarting.
– Grant Hutchins
Sep 20 '11 at 14:32
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What is the difference between CurrentCulture and CurrentUICulture properties of CultureInfo in .NET
...e long date format (D) can contain quite some "language": en-US returns "Friday, April 6, 2018", whereas ru-RU returns "6 апреля 2018 г.".
– O. R. Mapper
Apr 6 '18 at 9:46
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Create RegExps on the fly using string variables
...lace).join(replacement)
...and that's all. This is a commonly-understood idiom.
say I want to replace everything but string_to_replace
What does that mean, you want to replace all stretches of text not taking part in a match against the string? A replacement with ^ certainly doesn't this, be...
How can I build multiple submit buttons django form?
... use self.data in the clean_email method to access the POST data before validation. It should contain a key called newsletter_sub or newsletter_unsub depending on which button was pressed.
# in the context of a django.forms form
def clean(self):
if 'newsletter_sub' in self.data:
# do s...
Why and not taking font-family and font-size from body?
...m, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", "Helvetica", "Arial", sans-serif; }
– getup8
Jun 23 at 5:14
add a commen...
Inherit docstrings in Python class inheritance
...elf.get_no_inst(cls)
def get_with_inst(self, obj, cls):
overridden = getattr(super(cls, obj), self.name, None)
@wraps(self.mthd, assigned=('__name__','__module__'))
def f(*args, **kwargs):
return self.mthd(obj, *args, **kwargs)
return self.use_pare...
how do you filter pandas dataframes by multiple columns
To filter a dataframe (df) by a single column, if we consider data with male and females we might:
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