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Error in Swift class: Property not initialized at super.init call
I have two classes, Shape and Square
12 Answers
12
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Activity has leaked window that was originally added
What is this error, and why does it happen?
40 Answers
40
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RegEx to extract all matches from string using RegExp.exec
...s an array.
For example:
const str = 'All of us except @Emran, @Raju and @Noman was there';
console.log(
str.match(/@\w*/g)
);
// Will log ["@Emran", "@Raju", "@Noman"]
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imp...
User Authentication in ASP.NET Web API
... return View();
}
The above rule will allow only users in the Admin and Super User roles to access the method
These rules can also be set in the web.config file, using the location element. Example:
<location path="Home/AdministratorsOnly">
<system.web>
<authoriza...
How to declare constant map
...a func you can declare it like:
romanNumeralDict := map[int]string{
...
And in Go there is no such thing as a constant map. More information can be found here.
Try it out on the Go playground.
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Remove grid, background color, and top and right borders from ggplot2
...ately below by using ggplot2. I can come close, but cannot remove the top and right borders. Below I present several attempts using ggplot2, including several suggestions found on or via Stackoverflow. Unfortunately I have not been able to get those suggestions to work.
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Idiomatic way to wait for multiple callbacks in Node.js
...to have a look at:
Promises
The Promise object is used for deferred and asynchronous computations.
A Promise represents an operation that hasn't completed yet, but is
expected in the future.
A popular promises library is bluebird. A would advise to have a look at why promises.
You s...
What are the differences between Perl, Python, AWK and sed? [closed]
just want to know what are the main differences among them? and the power of each language (where it's better to use it).
5...
django : using select_related and get_object_or_404 together
Is there any way of using get_object_or_404 and select_related together or any other way to achieve the result of using these two together(except from putting it in try/except)??
...
jQuery disable a link
...h is to visit the specified href.
From the jQuery tutorial:
For click and most other events, you
can prevent the default behaviour -
here, following the link to jquery.com
- by calling event.preventDefault() in the event handler
If you want to preventDefault() only if a certain conditio...