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Are strongly-typed functions as parameters possible in TypeScript?
...f 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);
}
}
var foo = new Foo();
var strCallback = (re...
How to create a new file together with missing parent directories?
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Have you tried this?
file.getParentFile().mkdirs();
file.createNewFile();
I don't know of a single method call that will do this, but it's pretty easy as two statements.
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JavaScript closures vs. anonymous functions
...ing what is a closure in JS and what isn't. We just want to make sure we really understand it correctly.
12 Answers
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What are all the common ways to read a file in Ruby?
What are all the common ways to read a file in Ruby?
10 Answers
10
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django-debug-toolbar not showing up
... to settings.py:
def show_toolbar(request):
return True
SHOW_TOOLBAR_CALLBACK = show_toolbar
That will effectively remove all checks by debug toolbar to determine if it should or should not load itself; it will always just load. Only leave that in for testing purposes, if you forget and launc...
RESTful web service - how to authenticate requests from other services?
...eds to be accessed by users, but also other web services and applications. All of the incoming requests need to be authenticated. All communication takes place over HTTPS. User authentication is going to work based on an authentication token, acquired by POSTing the username and password (over an SS...
How to pass a user defined argument in scrapy spider
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The above code is only partially working for me. For eg. If I define domain using self.domain, I'm still not able to access it outside the __init__ method. Python throws a not defined error. BTW, why have you omitted the super call? PS. I'm working wit...
Where are environment variables stored in registry?
...ironment variable remotely. To do this I think the best way is to read it from registry.
4 Answers
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Abusing the algebra of algebraic data types - why does this work?
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Disclaimer: A lot of this doesn't really work quite right when you account for ⊥, so I'm going to blatantly disregard that for the sake of simplicity.
A few initial points:
Note that "union" is probably not the best term for A+B here--that's specifically ...
Map enum in JPA with fixed values?
I'm looking for the different ways to map an enum using JPA. I especially want to set the integer value of each enum entry and to save only the integer value.
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