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Undefined, unspecified and implementation-defined behavior
...tandard as unspecified (for example, order of evaluation of arguments to a function). Where possible, this International Standard defines a set of allowable behaviors. These define the nondeterministic aspects of the abstract machine.
Certain other operations are described in this International Stan...
Mock framework vs MS Fakes frameworks
...ck, however the approach is different, Fakes generates code to achive this functionality but Mocks framework does not. So is my understanding correct? Is Fakes just another Mock framework
...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ack(RCSPW(new Widget));
...
v.erase(remove_if(v.begin(),v.end(),not1(mem_fun(&Widget::isCertified))),v.end());
第34条：了解哪些算法要求使用排序的区间作为参数。
下面的代码要求排序的区间：
binary_search lower_bound
upper_bound equal_range
set_union set_...
ESP8285接入App Inventor 2深度调研：4种连接方案+是否需要开发拓展 - 创客...
...研：连接方案与拓展评估
本文基于MIT App Inventor源码、fun123自研拓展源码、以及ESP8285官方数据手册，深度调研ESP8285芯片接入App Inventor 2的所有可行路径。
一、ESP8285芯片概述
ESP8285是乐鑫(Espressif)推出的WiFi SoC，本质是ESP8266...
How can I change my Cygwin home folder after installation?
...directory is the second-to-last element on your user's line in /etc/passwd.¹
Whichever way you do it, this causes the HOME environment variable to be set during shell startup.²
See this FAQ item for more on the topic.
Footnotes:
Consider moving /etc/passwd and /etc/group out of the way in o...
Trusting all certificates with okHttp
...
Update OkHttp 3.0, the getAcceptedIssuers() function must return an empty array instead of null.
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Decorators with parameters?
...rguments is a bit different - the decorator with arguments should return a function that will take a function and return another function. So it should really return a normal decorator. A bit confusing, right? What I mean is:
def decorator_factory(argument):
def decorator(function):
def...
What is lexical scope?
...
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer levels.
There is another way, called dynamic scope used by the first implementation of Lisp, again in a ...
What's the $unwind operator in MongoDB?
...e" ,
author : "bob" ,
posted : new Date () ,
pageViews : 5 ,
tags : [ "fun" , "good" , "fun" ] ,
comments : [
{ author :"joe" , text : "this is cool" } ,
{ author :"sam" , text : "this is bad" }
],
other : { foo : 5 }
}
Notice how tags is actually an array of 3 ite...
Embed SVG in SVG?
...
Use the image element and reference your SVG file. For fun, save the following as recursion.svg:
<svg width="100%" height="100%" viewBox="-100 -100 200 200" version="1.1"
xmlns="http://www.w3.org/2000/svg">
<circle cx="-50" cy="-50" r="30" style="fill:red" />
...