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What does *:: (asterisk double colon) do in Ruby? 繁体
2013年01月06 - I was poking through the Rails code today and stumbled upon this snippet: 今天我正在浏览Rails代码并偶然发现了这个片段: new_date(*::Date._parse(string, false).values_at(

Maven:浅析依赖(dependency)关系中 scope 的含义 繁体
2017年08月28 - 在 Pom4 中,dependency 元素中引入了 scope 元素,这是一个很重要的属性。在Maven 项目中 Jar 包冲突、类型转换异常的很大原因是由于 scope 元素使用不当造成的。 scope 元素的作用:控制 dependency 元素的使用范围。通俗的讲,就是控制 Jar 包

Whats wrong with kohana's view variable scope? 繁体
2012年09月10 - To quickly summarize my problem, I simply copied the example of (http://php.net/manual/en/language.variables.scope.php) into one of my views and wonde

Authlogic, rails3_acts_as_paranoid and validates_uniqueness_of :login + default_scope(:conditions => {:active => true}) 繁体
2010年10月21 - I want to be able to create multiple user accounts with the same login (because of the case a user deletes his account... and then sign up with the sa

Is there a way to rename an Angular variable in the view? 繁体
2014年12月17 - In my Angular project, I am using a particular value that in my controller is called something like: 在我的Angular项目中,我使用的是一个特定的值,在我的控制器中被称为: $scope.fea

What is the difference between my and our in Perl? 繁体
2009年05月10 - I know what my is in Perl. It defines a variable that exists only in the scope of the block in which it is defined. What does our do? How does our dif

Why can functions in Python print variables in enclosing scope but cannot use them in assignment? 繁体
2013年09月17 - If I run the following code: 如果我运行以下代码: x = 1 class Incr: print(x) x = x + 1 print(x) print(x) It prints: 1 2 1 Okay no problems,

rails: using a class defined in another module 繁体
2012年05月23 - I am getting the following error, when I try to run my application: 当我尝试运行我的应用程序时,我收到以下错误: uninitialized constant RegistrationsController::User_seria

How to correctly reset graph and variables after Restoring Trained Model 繁体
2018年02月02 - I found the following code and tried to implement a Saver() for confirming the trained model can in fact be loaded an used but seems some variables or

static keyword useless in namespace scope? 繁体
2011年05月17 - namespace N { static int x = 5; } What could be the importance/use-cases of declaring having a static variable at namespace scope? 声明在命名空间范围内有静态变


 
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