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Are strongly-typed functions as parameters possible in TypeScript?
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Sure. A function's type consists of the types of its argument and its return type. Here we specify that the callback parameter's type must be "function that accepts a number and returns type any":
class Foo {
save(callback: (n: number) => any) : void {
callback(42);
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Make elasticsearch only return certain fields?
... ["user", "message", ...],
"query": ...,
"size": ...
}
In ES 2.4 and earlier, you could also use the fields option to the search API:
{
"fields": ["user", "message", ...],
"query": ...,
"size": ...
}
This is deprecated in ES 5+. And source filters are more powerful anyway!
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How to forward declare a C++ template class?
...n value }
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};
Note that the default is in the forward declaration and not in the actual definition.
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Closing Database Connections in Java
...close() method in order to release any other database resources (cursors, handles, etc) the connection may be holding on to.
Actually, the safe pattern in Java is to close your ResultSet, Statement, and Connection (in that order) in a finally block when you are done with them, something like that:...
Remove all multiple spaces in Javascript and replace with single space [duplicate]
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i'm reading data in from a txt file (via AJAX), and @InfinitiesLoop regex worked fine but Josiah's didn't
– Jeff
Apr 23 '12 at 13:48
2
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How to get enum value by string or int
...Johannes What do you mean by that? There is a generic way, refer my answer and others too.
– Sriram Sakthivel
May 9 '14 at 12:39
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Initializing a two dimensional std::vector
...std::vector::vector(count, value) constructor that accepts an initial size and a default value:
std::vector<std::vector<int> > fog(
A_NUMBER,
std::vector<int>(OTHER_NUMBER)); // Defaults to zero initial value
If a value other than zero, say 4 for example, was required to...
How to find the created date of a repository project on GitHub?
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This worked on a live repo and also on a recently dead one too.
– Joe
Jan 23 '18 at 4:45
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UIWebView open links in Safari
... return true }
UIApplication.shared.open(url, options: [:], completionHandler: nil)
return false
}
Update
As openURL has been deprecated in iOS 10:
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationTy...
Is it possible to change only the alpha of a rgba background colour on hover?
...0.8); }
a:hover div { background-color: rgba(var(--rgb), 1); }
To understand how this works, see How do I apply opacity to a CSS color variable?
If custom properties are not an option, see the original answer below.
Unfortunately, no, you'll have to specify the red, green and blue values again...