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Java 8 Lambda function that throws exception?
I know how to create a reference to a method that has a String parameter and returns an int , it's:
25 Answers
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How to initialize an array's length in JavaScript?
...he tutorials that I've read on arrays in JavaScript (including w3schools and devguru ) suggest that you can initialize an array with a certain length by passing an integer to the Array constructor using the var test = new Array(4); syntax.
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How do I remove the Devise route to sign up?
... option. You can either provide a patch
or use :skip => :registerable and add only the routes you want.
The original question was :
Is there any good way to remove a specific route (the delete route)
from Rails?
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Async/Await vs Threads
...b done. Ideally it doesn't use a thread at all, it posts a driver request and once the driver completes the data transfer it generates a completion notification callback. Networking is by far the most common usage, latencies of hundreds of milliseconds are common and an inevitable side-effect of s...
How to find out which package version is loaded in R?
...cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
12 Answe...
Can I call a constructor from another constructor (do constructor chaining) in C++?
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C++11: Yes!
C++11 and onwards has this same feature (called delegating constructors).
The syntax is slightly different from C#:
class Foo {
public:
Foo(char x, int y) {}
Foo(int y) : Foo('a', y) {}
};
C++03: No
Unfortunately, there'...
How do you build a Singleton in Dart?
...all when it's really a constructor definition. There's the _internal name. And there's the nifty language design point that Dart lets you start out (dart out?) using an ordinary constructor and then, if needed, change it to a factory method without changing all the callers.
– J...
Maven is not working in Java 8 when Javadoc tags are incomplete
Since I use Maven I have been able to build and install in my local repository projects that have incomplete Javadoc tags (for example, a missing parameter).
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How to know if an object has an attribute in Python
...at, if the property is likely to be there most of the time, simply call it and either let the exception propagate, or trap it with a try/except block. This will likely be faster than hasattr. If the property is likely to not be there most of the time, or you're not sure, using hasattr will probably ...
How to get just one file from another branch
I am using git and working on master branch. This branch has a file called app.js .
10 Answers
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