private

Access to private field of a super class

*爱你&永不变心* 提交于 2019-12-01 21:56:11
问题 As everyone knows, private fields are not inherited between classes. What intrigues me, is how it works for inner static classes. Consider the following code: public class Main { public static void main(String[] args) { new B(); } private static class A { private int a = 10; private void foo() { System.out.println("A.foo"); } } private static class B extends A { { // foo(); // compile-time error super.foo(); // ok // System.out.println(a); // compile-time error System.out.println(super.a); //

PDFSharp private fonts for azure 1.50

大城市里の小女人 提交于 2019-12-01 21:40:40
I have downloaded and installed PDFSharp 1.5 and I am having trouble using private fonts. I have created in testing a pdf creator and it works great. When I load it into Azure it gives me the error can't load font. Did research and found out that they do not have any loaded fonts so I must use private font. I can only find examples of the older 1.3 version and the methods are changed to new ones. Can somebody show me a simple example using the new version of PDFSharp? Thanks John This is for PdfSharp 1.5 beta3b. Here is a complete and fixed example based on links from other answers, and other

labeling a group of members as private/public in c#

烂漫一生 提交于 2019-12-01 20:32:57
in a c++ class declaration, you can label a group of members as private or public, e.g. private: int x; double y; seems like there's no way to do this in c#. am I wrong? No, you can't not do this in C#. At best, you can use the default visibility for members, which is private, and not use private, but for public, you have to indicate it for all members. You're correct. Although, if you leave visibility keyword off altogether, a member defaults to private. No you're not wrong. If you don't write any modifiers it will be assumed as private. 来源: https://stackoverflow.com/questions/546869/labeling

Java - Class method can see private fields of same-class parameter

柔情痞子 提交于 2019-12-01 20:29:02
问题 I'm encountering a rather odd behavior, and not sure if this is a Java issue or just something with Eclipse. Take the following code: class Foo { private String text; public void doStuff(Foo f) { System.out.println(f.text); } } The problem here is, why is f.text accessible? It's a private field, so by my logic, it shouldn't be, but the IDE seems to think it is. 回答1: This is by design. Private fields are accessible within the same class, even if a different instance . See here for more details

Java - Class method can see private fields of same-class parameter

天涯浪子 提交于 2019-12-01 19:25:06
I'm encountering a rather odd behavior, and not sure if this is a Java issue or just something with Eclipse. Take the following code: class Foo { private String text; public void doStuff(Foo f) { System.out.println(f.text); } } The problem here is, why is f.text accessible? It's a private field, so by my logic, it shouldn't be, but the IDE seems to think it is. This is by design. Private fields are accessible within the same class, even if a different instance . See here for more details and an official statement from Oracle on this. Since doStuff is a member of Foo , any private fields of Foo

simulate private variables in python [duplicate]

余生颓废 提交于 2019-12-01 17:44:56
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: private members in python I've got few variables I really want to hide because they do not belong outside my class. Also all such non-documented variables render inheritance useless. How do you hide such variables you don't want to show outside your object? To clarify why I need private variables, first one example where inability to hide variables is just an inconvenience, then another that's really a problem:

Global and Local and Private Functions (Javascript)

拜拜、爱过 提交于 2019-12-01 16:54:58
I am currently reading a book on Javascript by Pragmatic, and I'm confused about one thing. They have a section on how to make variables global, local, or private. What is the difference between local and private variables? Is there one? How does one make a variable global or local, They said something about putting 'var =' before it, but it was very vague. Raynos None, People use "private" because they are mistaken and are meant to say "local" local variables are defined as var foo = "local"; global variables are a properties of the global scope object (which is window in the browser) window

delete modifier vs declaring function as private

非 Y 不嫁゛ 提交于 2019-12-01 15:09:28
I read this question, but it still doesn't make a lot of sense to me. It still sounds more like a sugarcoating feature. What's the difference between: class A { // public/private ? A (const A&) = delete; }; and class A { private: A (const A&); // MISSING implementation }; Same for operator= or other functions. One difference is that =delete allows for compile-time errors while in some cases the declaration without a definition is only caught at link-time (at which the error message is typically not pointing you to the source of the problem). One such case is when you add a member function that

PHP - Private class variables giving error: undefined variable

家住魔仙堡 提交于 2019-12-01 14:07:24
问题 I am getting the error "Undefined variable: interval in C:\wamp\www\DGC\classes\DateFilter.php" Here is my code for the DateFilter class: class DateFilter extends Filter { //@param daysOld: how many days can be passed to be included in filter //Ex. If daysOld = 7, everything that is less than a week old is included private $interval; public function DateFilter($daysOld) { echo 'days old' . $daysOld .'</ br>'; $interval = new DateInterval('P'.$daysOld.'D'); } function test() { echo $interval-

What does the “private” modifier do?

杀马特。学长 韩版系。学妹 提交于 2019-12-01 13:44:22
问题 Considering "private" is the default access modifier for class Members, why is the keyword even needed? 回答1: It's for you (and future maintainers), not the compiler. 回答2: There's a certain amount of misinformation here: "The default access modifier is not private but internal" Well, that depends on what you're talking about. For members of a type, it's private. For top-level types themselves, it's internal. "Private is only the default for methods on a type" No, it's the default for all