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Assignment inside lambda expression in Python
I have a list of objects and I want to remove all objects that are empty except for one, using filter and a lambda expression.
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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...脚本，用在很多需要性能的地方，比如：游戏脚本，nginx，wireshark的脚本，当你把他的源码下下来编译后，你会发现解释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏...
Removing item from vector, while in C++11 range 'for' loop?
... or otherwise iterate in a non-linear fashion through the container.
For example:
auto i = std::begin(inv);
while (i != std::end(inv)) {
// Do some stuff
if (blah)
i = inv.erase(i);
else
++i;
}
...
Benchmarking (python vs. c++ using BLAS) and (numpy)
I would like to write a program that makes extensive use of BLAS and LAPACK linear algebra functionalities. Since performance is an issue I did some benchmarking and would like know, if the approach I took is legitimate.
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Lists in ConfigParser
...
And if you've got complex lists, you can refer to this question: stackoverflow.com/questions/330900/… :-)
– John Fouhy
Dec 3 '08 at 1:06
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LINQ to Entities does not recognize the method
...ement. In order for that to work, you will have to restructure your query expression into an expression that Entity Framework can handle.
public System.Linq.Expressions.Expression<Func<Charity, bool>> IsSatisfied()
{
string name = this.charityName;
string referenceNumber = this....
Inline functions in C#?
...full attribute usage is in mscorlib.dll,
// so should not need to include extra references
using System.Runtime.CompilerServices;
...
[MethodImpl(MethodImplOptions.AggressiveInlining)]
void MyMethod(...)
1. Previously "force" was used here. Since there were a few downvotes, I'll try to clarify ...
Extract month and year from a zoo::yearmon object
...
Use the format() method for objects of class "yearmon". Here is your example date (properly created!)
date1 <- as.yearmon("Mar 2012", "%b %Y")
Then we can extract the date parts as required:
> format(date1, "%b") ## Month, char, abbreviated
[1] "Mar"
> format(date1, "%Y") ## Year w...
Dynamically updating plot in matplotlib
... depending on the version you have. Have you seen the matplotlib cookbook examples? Also, check out the more modern animation examples in the matplotlib documentation. Finally, the animation API defines a function FuncAnimation which animates a function in time. This function could just be the funct...
Emacs on Mac OS X Leopard key bindings
... Preferences...
Under the Settings tab, go to the Keyboard tab
Check the box labeled Use option as meta key
That's it! You should be well on your way to becoming an Emacs master!
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