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“Comparison method violates its general contract!”

...ode: public int compareTo(tfidfContainer compareTfidf) { //descending order if (this.tfidf > compareTfidf.tfidf) return -1; else if (this.tfidf < compareTfidf.tfidf) return 1; else return 0; } The transitive property clearly holds, but for some re...
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Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean

... managed bean is an object that its life cycle (construction, destruction, etc) is managed by a container. In Java ee we have many containers that manage life cycle of their objects, like JSF container, EJB container, CDI container, Servlet container, etc. All of these containers work kind of ind...
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Are static class instances unique to a request or a server in ASP.NET?

...ferent requests may or may not be handled by the same worker process. In order to share data with a specific user and across requests, use HttpContext.Current.Session. In order to share data within a specific request, use HttpContext.Current.Items. In order to share data across the entire applicat...
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Localization of DisplayNameAttribute

... We are doing this for a number of attributes in order to support multiple language. We have taken a similar approach to Microsoft, where they override their base attributes and pass a resource name rather than the actual string. The resource name is then used to perform a ...
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Recursion or Iteration?

... they are designed (Fibonacci sequences, traversing a tree like structure, etc.). Recursion makes the algorithm more succinct and easier to understand (therefore shareable and reusable). Also, some recursive algorithms use "Lazy Evaluation" which makes them more efficient than their iterative brot...
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How to log PostgreSQL queries?

...ration file. On Debian and Ubuntu GNU/Linux, this file usually resides at /etc/postgresql/$v/main/postgresql.conf, where $v is the server version. Also, on the aforementioned systems, when log_destination = 'stderr', the output is written to /var/log/postgresql/postgresql-$v-main.log, where $v is th...
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How do I get user IP address in django?

... on the Internet else: # The client's IP address is private # Order of precedence is (Public, Private, Loopback, None) Advanced Usage: Custom Header - Custom request header for ipware to look at: i, r = get_client_ip(request, request_header_order=['X_FORWARDED_FOR']) i, r = get_cli...
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[解决]CTRL: PTY read or GRE write failed - 更多技术 - 清泛网 - 专注C/C++及内核技术

....XXX.XXX control connection finished 于是把打开调试模式,修改/etc/ppp/pptp-options 文件,找到 #取消如下行前# debug #执行 service pptpd restart 取消行前的注释,重启pptpd服务进入调试模式 分析日志后发现是logwtmp版本的与pptpd版本...
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split string only on first instance - java

...erminated by the end of the string. The substrings in the array are in the order in which they occur in this string. If the expression does not match any part of the input then the resulting array has just one element, namely this string. The limit parameter controls the number of times the pa...
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Asynchronous Process inside a javascript for loop [duplicate]

.../rejected when the asynchronous operation is complete. Also, note that in order to use await, the containing function must be declared async. Run asynchronous operations in parallel and use Promise.all() to collect results in order function someFunction() { let promises = []; for (let ...