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Guice puzzler: Batch scoped Encapsulated Context

由 孤人 提交于 2020-03-22 06:10:45
问题 We are preparing to begin using Guice in our insurance data conversion platform and I have encountered an interesting scenario that does not seem to be directly addressed in the Guice docs or any postings I have found. Our platform uses the Encapsulated Context (EC) pattern in several important areas. For example, imagine we are processing a set of 10 policies. Whenever we begin processing a new policy, we wish to construct a PolicyContext object and initialize properties such as policy

Why is C# CS0136 error not reported when compiled with /langversion:latest [duplicate]

由 拟墨画扇 提交于 2020-03-21 07:00:13
问题 This question already has an answer here : Lambda parameter name (sometimes) conflicting with local name (1 answer) Closed 11 days ago . The code below compiles fine in Debug but failed with a CS0136(A local or parameter named 'x' cannot be decaled..) error in Release. Anybody has any idea why the error is not reported in Debug build? public void test() { Action<int> a = x => x++; int x = 0; } Target framework 4.6.1 VS version: 16.4.3 and 16.4.5 MSBuildVersion: 16.4.0 MSBuildRuntimeVersion =

How to create, access and destroy session in JSF managed bean?

由 一个人想着一个人 提交于 2020-03-20 06:30:39
问题 Currently, I am creating a web application for an online shopping cart and I need to maintain session on each jsf page.. My questions are : How can I create and destroy session in managed bean How can I access value stored in session variable? Like this? FacesContext.getCurrentInstance().getExternalContext().getSessionMap.put("key",object); How can I destroy a session in jsf I also need to destroy the session using session.invalidate() but i am failed !! 回答1: How can I create and destroy

How to create, access and destroy session in JSF managed bean?

由 孤街醉人 提交于 2020-03-20 06:30:07
问题 Currently, I am creating a web application for an online shopping cart and I need to maintain session on each jsf page.. My questions are : How can I create and destroy session in managed bean How can I access value stored in session variable? Like this? FacesContext.getCurrentInstance().getExternalContext().getSessionMap.put("key",object); How can I destroy a session in jsf I also need to destroy the session using session.invalidate() but i am failed !! 回答1: How can I create and destroy

Is there a way to get outer scope variables with the same name?

由 大憨熊 提交于 2020-03-16 07:02:35
问题 If I defined some variable in outer closure, and in the inner closure has defined another variable with the same name. Can I somehow get the outer variable? I know it's still somewhere in the memory and not been overwritten since it can be printed after the function. Is there a way to access it? const foo = 'outer'; function bar() { const foo = 'inner'; // Is there a way to get the outside foo from here? console.log(foo); // "inner", but I want it to be "outer" } bar(); console.log(foo); //

Can't use locals() in list comprehension in Python 3?

由 有些话、适合烂在心里 提交于 2020-03-03 17:58:54
问题 The below works in Python 2 but not 3. Is there a way to access local variables in Python 3? Or an alternative solution to these cases? [('{name_var}_{i:02d}of{maxpg:02d}.{date_var}').format(i, **locals()) for i in range(start, end)] Error in Python 3: KeyError: 'local_var' Below is a simpler toy example of above (works in Python 2 but not 3) local_var = 'hello' ['{local_var}'.format(**locals()) for i in range(1)] Error in Python 3: KeyError: 'local_var' 回答1: As explained by @user2357112 in a

Can't use locals() in list comprehension in Python 3?

由 眉间皱痕 提交于 2020-03-03 17:58:20
问题 The below works in Python 2 but not 3. Is there a way to access local variables in Python 3? Or an alternative solution to these cases? [('{name_var}_{i:02d}of{maxpg:02d}.{date_var}').format(i, **locals()) for i in range(start, end)] Error in Python 3: KeyError: 'local_var' Below is a simpler toy example of above (works in Python 2 but not 3) local_var = 'hello' ['{local_var}'.format(**locals()) for i in range(1)] Error in Python 3: KeyError: 'local_var' 回答1: As explained by @user2357112 in a

Can't use locals() in list comprehension in Python 3?

由 本小妞迷上赌 提交于 2020-03-03 17:58:10
问题 The below works in Python 2 but not 3. Is there a way to access local variables in Python 3? Or an alternative solution to these cases? [('{name_var}_{i:02d}of{maxpg:02d}.{date_var}').format(i, **locals()) for i in range(start, end)] Error in Python 3: KeyError: 'local_var' Below is a simpler toy example of above (works in Python 2 but not 3) local_var = 'hello' ['{local_var}'.format(**locals()) for i in range(1)] Error in Python 3: KeyError: 'local_var' 回答1: As explained by @user2357112 in a

page request session application作用域(转)

由 一笑奈何 提交于 2020-03-02 11:27:23
几乎所有的Web开发语言都支持Session功能，Servlet也不例外。Servlet/JSP中的Session功能就是通过 作用域(scope) 这个概念来实现的。 作用域分为四种，分别为： Page：在当前页面有效(仅用于JSP中) Request：在当前请求中有效 Session：在当前会话中有效 Application：在所有应用程序中有效 是不是看不太明白？page因为仅用于JSP中，这里只讲述其他三种作用域。首先要声明的一点，所谓“作用域”就是“ 信息共享的范围 ”，也就是说一个信息能够在多大的范围内有效。 话说武松一日来到景阳岗，见一旗帜迎风飘扬，旗子上书五个大字“三碗不过岗”。武松叫道：“店家，拿三碗酒来，再切两斤熟牛肉！”店小二应声道：“三碗好酒，二斤熟牛肉啰～～”里面厨师赶忙当当当当切好牛肉，店小二倒上三碗酒，店小二端上前来。 武松咕咚咕咚连干三碗，叫一声“好酒！店家，再来三碗！”小二忙又倒上三碗好酒，武松一饮而尽。就这样前前后后武松一共喝了十八大腕。付了帐刚要走，店小二道： “客官，这前面山上有大虫，客官刚刚喝完十八碗酒恐怕过不得岗，不如在小店暂住一夜，待明天和猎户一同过岗岂不是好？” 之后武松说什么就留待各位看官自己去回忆啦。在这段武松打虎中，大家有没有看到些熟悉的东西？ · 武松: 浏览器。 · 酒馆: 服务器。 · 店小二、厨师:

Declaring variable sized array without using dynamic memory allocation

由 牧云@^-^@ 提交于 2020-03-02 02:12:30
问题 I want to allocate variable sized 2D array in a function without using new operator such that this 2D array is available to other functions in the same file. void draw(int i) { size=i; } void assign(char symbol) { char one[size][size]; /// ... Assigning values to one ... } void display() { /// Displaying values of one[size][size] for(int i=0;i<size;i++) { for(int j=0;j<size;j++) cout<<one[i][j]; cout<<endl; } } Execution order of functions is draw -> assign -> display This question may have
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