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How can I represent an infinite number in Python?
...y. float("inf") < Ellipsis returns True
– Singletoned
Aug 5 '15 at 8:27
2
Not sure about the ...
SQL Server, convert a named instance to default instance?
...
As far as I know, no. One reason is the folder structure on the hard drive; they will have a name like MSSQL10.[instancename]
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How do I calculate the normal vector of a line segment?
...(x', y') = (-y, x) and (x', y') = (y, -x) seems to be right, but why would one use dx and dy here. Moreover, based on slopes, m1 * m2 = -1 for right angle lines, hence dy' = dx' * (-dx/dy) and dx' = dy' * (-dy/dx), how come in your equation normal.x = x' = -dy?
– legends2k
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how to break the _.each function in underscore.js
...allback function once for each element present in the array until it finds one where callback returns a false value. If such an element is found, the every method immediately returns false.
In other words, you could do something convoluted like this (link to JSFiddle):
[1, 2, 3, 4].every(function...
How can I view the source code for a function?
...ned for arguments: x
Use showMethods("chol2inv") for currently available ones.
The output already offers a lot of information. standardGeneric is an indicator of an S4 function. The method to see defined S4 methods is offered helpfully:
> showMethods(chol2inv)
Function: chol2inv (package bas...
Why .NET String is immutable? [duplicate]
...formance win in the case in question). With mutable objects that can't be done.
No side-effects can come from passing an immutable type as a method to a parameter unless it is out or ref (since that changes the reference, not the object). A programmer therefore knows that if string x = "abc" at the ...
How to get an enum which is created in attrs.xml in code
... with an declare-styleable attribute of type enum. In xml I can now choose one of the enum entries for my custom attribute. Now I want to create an method to set this value programmatically, but I can not access the enum.
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Does .asSet(…) exist in any API?
...ily adapted to other collection types, so I'm setting this as the accepted one. Many thanks to everyone for the other great solutions. (btw, this Set is mutable)
– cahen
Oct 3 '17 at 11:23
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Can I call jquery click() to follow an link if I haven't bound an event handler to it with bind
...handlers for click events if the element is not a link. I guess this was done purposefully for some reason. This should be true though whether an event handler is defined or not, so I'm not sure why in your case attaching an event handler caused the native onClick handler to be called. You'll have...
Formula px to dp, dp to px android
...s rounded to the nearest screen bucket, but so is the dp unit! Try drawing one object that is 160dp wide and just below it you draw another object that is dpToPx(160) pixels wide and you will see that the size of the two objects are different. Also some phones (such as Galaxy Mini and Galaxy S3 Mini...