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Some exceptions to the vector series --vector in c++ expert

Wangshubo1989
Today, I write a few exceptions to write vector, you can catch the exception. Out_of_range The equivalent array out of bounds. Vector will automatically increase the capacity, but if the index exceeds the current size, it will cause an exception. #include #include Namespace STD using; Main int () { Vectorv (4); Std:: cout v[0]...

Vector C++

Performance diagnosis of trace.Net in dot application expert

Csharp25
Performance diagnosis of trace.Net in dot application...

The poor boy has no spring? The children of a poor family -- why more and more far away from the line of colleges and Universities expert

Baimafujinji
The children of a poor family, why more and more far away from the line? "The worse the school is, the worse the school is," the trend is being intensified and solidified. For thirty years, the country's transformation continues, but the bottom of the individual's destiny in transition, but in a gradual fall. "China Higher Education Study on the fairness of showed that the proportion of rural students in key universities in China since the 1990s continued to fall. North Rural Students in the proportion of three to one percent from. Tsinghua 2010 students in rural areas accounted for only 17%. ...

Poor again difficult child controversy expert

Baimafujinji
An old article, still worth thinking about and intergenerational poverty transfer can now be effectively break, an important key is perhaps education fairness. August 2011 08, Changjiang Daily, original title: teachers Post said poor again difficult Takako controversial the Yangtze River Business News, the report from our correspondent (reporter Zhang Yukun Tingting Intern Qu Huiyi Moyu) "do the fifteen years as a teacher I want to tell you that this era was hard to De Takako! Recently, a teacher in the online posting said, now a good result of the child is more and more biased in favor of the rich family, on the Internet caused heated debate. As of yesterday, the post in the end of the world...

Grafana log analysis with Elasticsearch expert

Chszs
Grafana is an open source, powerful indicator of instrument panel and graphic editor tool, which is based on Elasticsearch, Elasticsearch,.Grafana, OpenTSDB, Prometheus, InfluxDB, Graphite and other data sources. The latest version of the Grafana for the 2.6 edition. ...

Grafana Elasticsea Graphite InfluxDB OpenTSDB

[graphic] to talk about noise expert

Candycat1992
Write in front of a very long want to learn and finishing off the noise, a little contact with the people of the National People's Congress have heard the noise, and then you will find a variety of noise, Perlin noise, Worley noise, fractal (fractal) noise, etc.. Especially Perlin noise, a data that we say is different, more unknown so. I also always confused, and later found it still want to believe Wiki and paper. This article is to sum up the common noise above (i.e., the common procedural noise), what they are, how they are calculated, and some applications. All in the article...

EasyUI Cannot read property'onClose'of undefined to prevent duplication of submission and progress. expert

U011250851
Using the easyUI framework has a drawback is that the response is a bit slow, such as the use of dialog to submit a form may be a few seconds to submit, if the user clicks the submit button, may cause duplication. There is a way to solve this problem, that is, the use of progress bar, but also easyui. As follows: $.messager.progress (); Form var = $("#addcompany"); Form.aja...

EasyUI Prevent form duplication Progress bar OnClose

In the image processing mathematical examples and explain the principle of 21 - PCA image encoding expert

Baimafujinji
The principal component transform, PCA, K-L transform, Luonan - Roy transform card, Hotelling transform, although many names, but essentially they are a thing. PCA is a method of machine learning and data mining. It is also a kind of technology used in digital image processing for encoding and compression. This paper describes the relevant theoretical derivations. This paper will introduce the application of PCA through examples and images. ...

image processing Mathematics PCA principal component analysis

The mathematical principle of detailed 20 principal components transform in image processing (PCA) expert

Baimafujinji
The principal component transform, PCA, K-L transform, Luonan - Roy transform card, Hotelling transform, although many names, but essentially they are a thing. PCA is a method of machine learning and data mining. It is also a kind of technology used in digital image processing for encoding and compression. This paper describes the relevant theoretical derivations. A large set of matrix calculations are being struck! In reading this article, we need the knowledge of "probability theory" and "linear algebra". ...

image processing Mathematics PCA principal component analysis

2014 levels of data structure course summary full link expert

Sxhelijian
Data structure is a lesson, the last one, let the students write a course summary. The students own summary, achieve the goal of introspection, indirectly, I can understand the flipped classroom teaching reform, in their mind in the end is what appearance. Such a random text, more able to express their true feelings. Some students did not pay, the end of each of the busy, in fact, this is the rhythm of College life. I think write the flipped classroom taste, add an asterisk, there are a lot of articles, but also good, perhaps in the star of star plus without a momentary slip, no added on. It is a good summary. ...

data structure teaching summary

FreeRTOS series tenth ---FreeRTOS task creation and deletion expert

Zhzht19861011
In the FreeRTOS porting to the Cortex-M3 hardware platform, we have seen the creation of API, but the focus of the article is how to transplant FreeRTOS, this paper will focus on the task of creating and deleting the API function. Task to create and delete the API function in the task.c file, include the header file task.h. 1 task to create the 1.1 function description BaseType_txTaskCreate (...

Superclass was "javax.servlet.http.HttpServlet" not found on the Java Build Path The expert

Wangshuxuncom
This morning the use of 64 bit eclipse to create a web project, but when creating a JSP appeared "the superclass javax.servlet.http.HttpServlet. It was not found on the Java build path", as shown in the following picture: how to solve? 1, select the web project and create the right mouse button - > Path - > Build mouse to click Confi...

From the understanding of java-13.12 super wildcard expert

Raylee2007
In this section we discuss the super class wildcard. 1. What is super wildcard in the previous section we mention a wildcard, is used to achieve, led to a series of problems behind and now we introduce another wildcard - Super wildcard, it is used to achieve. Example: com.ray.ch13 package; Java.util.ArrayList import; Class Test public { Static void main public (String[]...

Java

View real-time query Mongodb command expert

Csharp25
View real-time query Mongodb...

Understand Activity expert

Qing_gee
In accordance with the Guo Lin the teacher of the "first line of Android code", and today I want to learning activity, first to a preliminary understanding of the activity, basically is according to dipper gourd painting mode, point back to the original knock Java Hello world model. ...

Android Activity understand