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Pip freeze vs. pip list
...ments.txt
The packages need to be in a specific format for pip to understand, which is
feedparser==5.1.3
wsgiref==0.1.2
django==1.4.2
...
That is the "requirements format".
Here, django==1.4.2 implies install django version 1.4.2 (even though the latest is 1.6.x).
If you do not specify ==1.4....
C++11 std::threads vs posix threads
...many platforms, go for Posix Threads. They are available almost everywhere and are quite mature. On the other hand if you only use Linux/gcc std::thread is perfectly fine - it has a higher abstraction level, a really good interface and plays nicely with other C++11 classes.
The C++11 std::thread cl...
css label width not taking effect
I have a generic form, which I'd like to style to align the labels and the input fields.
For some reason when I give a width to the label selector, nothing happens:
...
Is there a zip-like function that pads to longest length in Python?
...
In case you want to make your code both python 2 and python 3 compatible, you can use six.moves.zip_longest instead.
– Gamrix
Apr 14 '16 at 19:51
add...
Multiple commands in gdb separated by some sort of delimiter ';'?
I am trying to execute two commands at once in gdb:
6 Answers
6
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INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
...符，AH 为其属性。有关属性的说明，请参考注一。
AH=09H
这个功能是在光标位置显示字符，所要显示字符的 ASCII 码存于 AL 寄存器，字符重复次数存于 CX 寄存器，显示页存于 BH 寄存器，属性存于 BL 寄存器，其属性使用与 AH=08...
AngularJS : How to watch service variables?
... always use the good old observer pattern if you want to avoid the tyranny and overhead of $watch.
In the service:
factory('aService', function() {
var observerCallbacks = [];
//register an observer
this.registerObserverCallback = function(callback){
observerCallbacks.push(callback);
...
Disabling browser caching for all browsers from ASP.NET
...sers from caching the page. There are many ways to affect the HTTP headers and meta tags and I get the impression different settings are required to get different browsers to behave correctly. It would be really great to get a reference bit of code commented to indicate which works for all browsers ...
How to make a Java Generic method static?
...ic type variable.
Additionally, type variables between types (ArrayUtils) and static methods (appendToArray) never interfere with each other.
So, what does this mean:
In my answer <E> would hide the E from ArrayUtils<E> if the method wouldn't be static. AND <E> has nothing to do ...
Why do C++ libraries and frameworks never use smart pointers?
...part from the fact that many libraries were written before the advent of standard smart pointers, the biggest reason is probably the lack of a standard C++ Application Binary Interface (ABI).
If you’re writing a header-only library, you can pass around smart pointers and standard containers to yo...