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Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
Boost.Asio的简单使用(Timer,Thread,Io_service类)2. 同步Timer本章介绍asio如何在定时器上进行阻塞等待(blocking wait).实现,我们包含必要的头文件.所有的asio类可以简单的通过include "...目录：
1. 同步Timer
2. 异步Timer
3. 回调函数的参数
4. 成...
Exiting from python Command Line
...e exit in the command line, it finds the variable with that name and calls __repr__ (or __str__) on it. Usually, you'd get a result like:
<function exit at 0x00B97FB0>
But they decided to redefine that function for the exit object to display a helpful message instead. Whether or not that's ...
How can I get the source code of a Python function?
...
return a
But I believe that if the function is compiled from a string, stream or imported from a compiled file, then you cannot retrieve its source code.
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Database, Table and Column Naming Conventions? [closed]
...
I recommend checking out Microsoft's SQL Server sample databases:
https://github.com/Microsoft/sql-server-samples/releases/tag/adventureworks
The AdventureWorks sample uses a very clear and consistent naming convention that uses...
How to run code when a class is subclassed? [duplicate]
...on2 you would define the metaclass of a class with
class SuperClass:
__metaclass__ = Watcher
where Watcher is a subclass of type.
In Python3 the syntax has been changed to
class SuperClass(metaclass=Watcher)
Both are equivalent to
Superclass = Watcher(name, bases, clsdict)
where in t...
What breaking changes are introduced in C++11?
...t(x == -1); // C++03
assert(x == 0); // C++11
}
Change proposal
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3246.html#23
Standard reference
[C++03: 22.2.2.1.2/11]: The result of stage 2 processing can be one of
A sequence of chars has been accumulated in stage 2 that is con...
Installing libv8 gem on OS X 10.9+
...n older versions of libv8 as mentioned in the pull request (https://github.com/cowboyd/libv8/pull/95). Please try bumping up the version of libv8 in your Gemfile (or) a bundle update should suffice. Hope this helps.
From the libv8 README
Bring your own V8
Because libv8 is the interface for the V8 en...
How to implement the Android ActionBar back button?
...ay all the activities you want can have the backpress.
Android, API 16+:
http://developer.android.com/training/implementing-navigation/ancestral.html
AndroidManifest.xml:
<application ... >
...
<!-- The main/home activity (it has no parent activity) -->
<activity
...
Render Partial View Using jQuery in ASP.NET MVC
...ered result of the "UserDetails" partial view or control. Then just use an Http Get or Post from jQuery to call the Action to get the rendered html to be displayed.
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How to save all the variables in the current python session?
...r work:
import shelve
T='Hiya'
val=[1,2,3]
filename='/tmp/shelve.out'
my_shelf = shelve.open(filename,'n') # 'n' for new
for key in dir():
try:
my_shelf[key] = globals()[key]
except TypeError:
#
# __builtins__, my_shelf, and imported modules can not be shelved.
...