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What is the difference between null and undefined in JavaScript?
I want to know what the difference is between null and undefined in JavaScript.
33 Answers
...
Delete element in a slice
...u want (for example, fmt.Println can take as many arguments as you want).
Now, when calling a function, ... does the opposite: it unpacks a slice and passes them as separate arguments to a variadic function.
So what this line does:
a = append(a[:0], a[1:]...)
is essentially:
a = append(a[:0], ...
How to check Google Play services version?
...
How to know the version code of play services version 10.2
– Manmohan Soni
Jun 12 '18 at 9:01
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How can I change a secret Gist to public?
...
I upload a Gist code and set it to be secret.
Now I want to change the gist to public, but I can't find how to set it publi
Since May, 9th 2014, it is possible: "Change the visibility of your Gists"
You can change the visibility of your Gists whenever you want.
When ed...
What's the difference between tag and release?
...email to support@github.com or this contact form.
Update:
The GitHub API now allows to manipulate Releases. See the announcement.
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System.currentTimeMillis vs System.nanoTime
What I would like to know is whether I should use System.currentTimeMillis() or System.nanoTime() when updating my object's positions in my game? Their change in movement is directly proportional to the elapsed time since the last call and I want to be as precise as possible.
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How to resume Fragment from BackStack if exists
...ame())){
setTitle ("C");
//set selected item position, etc
}
}
Now, whenever the back stack changes, the title and checked position will reflect the visible Fragment.
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C# Lazy Loaded Automatic Properties
... SomeVariable
{
get { return _someVariable.Value; }
}
}
Can now be written as:
public class SomeClass
{
private Lazy<string> _someVariable = new Lazy<string>(SomeClass.IOnlyWantToCallYouOnce);
public string SomeVariable => _someVariable.Value;
}
...
How can I convert spaces to tabs in Vim or Linux?
...t it to work, not sure what is necessary and what is not, and btw i don't know what the "%" before reatab is doing: :set noet, :set tabstop=2, :retab!, :%retab!, :set tabstop=1, :retab!, :%retab!
– cwd
Feb 2 '12 at 1:39
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How get integer value from a enum in Rails?
...turns the integer value
Update for rails 5
For rails 5 the above method now returns the string value :(
The best method I can see for now is:
my_model.sale_info_before_type_cast
Shadwell's answer also continues to work for rails 5.
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