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How to use base class's constructors and assignment operator in C++?
I have a class B with a set of constructors and an assignment operator.
5 Answers
5
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Equivalent to 'app.config' for a library (DLL)
... under <appSettings> section. In case you're not using Visual Studio and adding the file manually, make sure to give it such name: DllName.dll.config, otherwise the below code won't work properly.
Now to read from this file have such function:
string GetAppSetting(Configuration config, strin...
django: BooleanField, how to set the default value to true?
...lay. This value
is not used as a fallback if data isn't given.
And if you dig into the code of form validation process, you will find that, for each fields, form will call it's widget's value_from_datadict to get actual value, so this is the place where we can inject default value.
To d...
How can I use swift in Terminal?
...'s new in Xcode 6 . The article introduces some new feature about Xcode 6, and it says:
13 Answers
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What do the python file extensions, .pyc .pyd .pyo stand for?
...c file that contains the bytecode to make importing it again later easier (and faster).
.pyo: This was a file format used before Python 3.5 for *.pyc files that were created with optimizations (-O) flag. (see the note below)
.pyd: This is basically a windows dll file. http://docs.python.org/faq/win...
Finding the index of elements based on a condition using python list comprehension
...ar to Matlab's, you would use numpy, a package for multidimensional arrays and numerical math in Python which is heavily inspired by Matlab. You would be using a numpy array instead of a list.
>>> import numpy
>>> a = numpy.array([1, 2, 3, 1, 2, 3])
>>> a
array([1, 2, 3, ...
Installing Python 3 on RHEL
...ernative installation directory, you can pass --prefix to the configurecommand.
Example: for 'installing' Python in /opt/local, just add --prefix=/opt/local.
After the make install step: In order to use your new Python installation, it could be, that you still have to add the [prefix]/bin to the ...
Efficiently updating database using SQLAlchemy ORM
I'm starting a new application and looking at using an ORM -- in particular, SQLAlchemy.
6 Answers
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How to convert DateTime? to DateTime
...this purpose.
Using it you end up with this code.
DateTime UpdatedTime = _objHotelPackageOrder.UpdatedDate ?? DateTime.Now;
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vector删除元素erase和通用算法remove区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...代器来删除单个或者范围的元素
iterator erase(
iterator _Where
);
iterator erase(
iterator _First,
iterator _Last
);
remove函数的定义
template<class _FwdIt, class _Ty> inline
_FwdIt remove(_FwdIt _First, _FwdIt _Last, const _Ty% _Val);
与erase不同的...