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What is the 'override' keyword in C++ used for? [duplicate]
...derived2: public base
{
public:
int foo(int x) override { ... } // ERROR
};
In derived2 the compiler will issue an error for "changing the type". Without override, at most the compiler would give a warning for "you are hiding virtual method by same name".
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iOS 7 - Status bar overlaps the view
...
Xcode 5 has iOS 6/7 Deltas which is specifically made to resolve this issue. In the storyboard, I moved my views 20 pixels down to look right on iOS 7 and in order to make it iOS 6 compatible, I changed Delta y to -20.
Since my storyboard is not using auto-layout,...
When should I use nil and NULL in Objective-C?
...l null]];
[check addObject:nil];
On the second line, we will not get any error, because it is perfectly fair to insert a NSNull object into a collection type object. On the third line, we will get "object cannot be nil" error. Because nil is not an object.
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STL 算法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一个无效形式的迭代器,当然也无法给出算法函数错误的提示,因为迭代器并不是真实的类别,它只是传递给函数模板的一种参数格式而已
STL中算法分类:
操作对象
直接改变容器的内容
将原容器的内容复制一份,修改其副本,然...
Is there a “goto” statement in bash?
...s make it so that labels start like so : start: so that they aren't syntax errors.
– Alexej Magura
Apr 7 '17 at 18:03
5
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See my work log in jira
I want to see how many total hours I have logged in jira. Currently jira shows work log for individual story / sub tasks. But is it possible to show the total amount of work logged in jira by individual developer.
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The property 'value' does not exist on value of type 'HTMLElement'
... For some reason, the accepted answer here was raising the following error for me: JSX element 'HTMLInputElement' has no corresponding closing tag. This is the answer that worked for me.
– NigelTufnel
Sep 26 '18 at 14:02
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Default filter in Django admin
How can I change the default filter choice from 'ALL'? I have a field named as status which has three values: activate , pending and rejected . When I use list_filter in Django admin, the filter is by default set to 'All' but I want to set it to pending by default.
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Managing constructors with many parameters in Java
...ing to keep track of any kind of argument order, since any order of those calls will work equally well.
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Is there a way to provide named parameters in a function call in JavaScript?
...tructuring can be used to simulate named parameters. It would require the caller to pass an object, but you can avoid all of the checks inside the function if you also use default parameters:
myFunction({ param1 : 70, param2 : 175});
function myFunction({param1, param2}={}){
// ...function body....