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Is JavaScript's “new” keyword considered harmful?
...ck if the thought of broken code silently working bothers you. Or, as some commented, use the check to introduce a runtime exception:
if ( !(this instanceof arguments.callee) )
throw new Error("Constructor called as a function");
(Note that this snippet is able to avoid hard-coding the constr...
Rule-of-Three becomes Rule-of-Five with C++11?
...
I'd say the Rule of Three becomes the Rule of Three, Four and Five:
Each class should explicitly define exactly one
of the following set of special member
functions:
None
Destructor, copy constructor, copy assignment operator
I...
App Inventor 2 数据可视化教程 - 折线图/曲线图/实时数据绘图 · App Inventor 2 中文网
...
// 先发起网络请求
Web客户端1.Get("https://api.example.com/data.json")
// 在 Web客户端1.收到内容 事件中
when Web客户端1.GotText(url, 响应代码, 响应类型, 响应内容) {
二维图表数据1.ImportFromWeb(Web客户端1, "time", "value")
}
8.6 ...
Are memory leaks ever ok? [closed]
...re to determine whether it's an "acceptable" memory leak.
It's similar to compiler warnings – will the warning be fatal to my particular application? Maybe not.
But it's ultimately a matter of professional discipline. Tolerating compiler warnings and tolerating memory leaks is a bad habit tha...
“Least Astonishment” and the Mutable Default Argument
... not a design flaw, and it is not because of internals, or performance.
It comes simply from the fact that functions in Python are first-class objects, and not only a piece of code.
As soon as you get to think into this way, then it completely makes sense: a function is an object being evaluated on...
Why not use java.util.logging?
...t solve the problem of heterogeneous loggers, it just makes it worse. xkcd.com/927
– Charlie
Aug 5 '18 at 22:53
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show 6 more comments
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Covariance and contravariance real world example
...IEnumerable<Teacher> GetTeachers() { ... }
}
public class PersonNameComparer : IComparer<Person>
{
public int Compare(Person a, Person b)
{
if (a == null) return b == null ? 0 : -1;
return b == null ? 1 : Compare(a,b);
}
private int Compare(string a, s...
Phase • Animations made easy! - Extensions - Kodular Community
... });
}
Kodular Community
Phase • Animations made easy!
Extensions
...
Is there any advantage of using map over unordered_map in case of trivial keys?
... RA: You can somewhat control that with your own allocator type combined with any container, if you think it matters for any particular program.
– Roger Pate
Feb 4 '10 at 3:51
...
Why is my Git Submodule HEAD detached from master?
...many times my submodule head gets detached from master branch.
This is a common case when one does not use submodules too often or has just started with submodules. I believe that I am correct in stating, that we all have been there at some point where our submodule's HEAD gets detached.
Cause...