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upstream sent too big header while reading response header from upstream
...2s harder to hit but not impossible, e.g native:
bash-4.1# for it in {30..200..3}; do for size in {100..250..3}; do echo "size=$size iterations=$it $(curl -sv "http://localhost/debug.php?size=$size&iterations=$it" 2>&1 | egrep '^< HTTP')"; done; done | grep 502 | head
size=121 iterati...
What does flushing the buffer mean?
I am learning C++ and I found something that I can't understand:
3 Answers
3
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What is the difference between linear regression and logistic regression?
...anted to predict, based on size, whether a house would sell for more than $200K, you would use logistic regression. The possible outputs are either Yes, the house will sell for more than $200K, or No, the house will not.
sha...
奇葩职位为何频现互联网？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...以往害怕“挨骂”的企业则纷纷主动“找骂”，这种转变不能不让业界惊叹：行业的口碑竞争时代难道已经来“游山玩水，不爽就骂，费用报销，年薪百万。我们会签正式合同，绝不是临时工！”同程旅游创始人、CEO吴志祥前日...
浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...红外成像
唠叨了半天，听上去似乎有点跑题了，其实不然，对互联网从业者而言，同样需要有火眼金睛，以便识别网友的喜好，此时的衡量标准是点击，点击越多则表示越喜欢，此技术被称作Heatmap，已经有网站提供此类服务...
How do I parse JSON with Objective-C?
...ndle] pathForResource:@"index" ofType:@"json"];
//将文件内容读取到字符串中，注意编码NSUTF8StringEncoding 防止乱码，
NSString* jsonString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
//将字符串写到缓冲区。
NSData* jsonData...
Map enum in JPA with fixed values?
...mplements Serializable {
public enum Right {
READ(100), WRITE(200), EDITOR (300);
private int value;
Right(int value) { this.value = value; }
public int getValue() { return value; }
public static Right parse(int id) {
Right right = nul...
Nested function in C
...
I mention this as many people coding in C are now using C++ compilers (such as Visual C++ and Keil uVision) to do it, so you may be able to make use of this...
Although not yet permitted in C, if you're using C++, you can achieve the same effect with the lambda functions introduc...
How do you append an int to a string in C++? [duplicate]
...
With C++11, you can write:
#include <string> // to use std::string, std::to_string() and "+" operator acting on strings
int i = 4;
std::string text = "Player ";
text += std::to_string(i);
...
Is there a way to specify how many characters of a string to print out using printf()?
...8 chars: %.8s\n", "A string that is more than 8 chars");
If you're using C++, you can achieve the same result using the STL:
using namespace std; // for clarity
string s("A string that is more than 8 chars");
cout << "Here are the first 8 chars: ";
copy(s.begin(), s.begin() + 8, ostream_ite...