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How to create a file in Android?
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Do you need to call flush before close ?
– Mr_and_Mrs_D
Apr 29 '13 at 22:54
1
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Order of event handler execution
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A MulticastDelegate has a linked list of delegates, called an invocation list, consisting of one or more elements. When a multicast delegate is invoked, the delegates in the invocation list are called synchronously in the order in which they appear. If an error occurs during e...
How to tell if UIViewController's view is visible
...d be better to check first to see if it is already loaded. I've added the call to isViewLoaded to avoid this problem.
if (viewController.isViewLoaded && viewController.view.window) {
// viewController is visible
}
Since iOS9 it has became easier:
if viewController.viewIfLoaded?.wind...
How to get Erlang's release version number from a shell?
...he current Erlang/OTP version I have installed (17.4) the file is actually called OTP_VERSION.
– juan.facorro
Apr 21 '15 at 18:42
1
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Cocoa Touch: How To Change UIView's Border Color And Thickness?
...hen you need to change the border color, you change the variable value and call setNeedsDisplay on the view. This will force the redraw of the UIView and implicitly will re-call drawRect. Not tested, tho ...
– Nicu Surdu
Jul 26 '12 at 11:27
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How to convert CSV file to multiline JSON?
... that means that for each document you want in your output, you'll have to call json.dumps.
Since the newline you want separating your documents is not contained in those documents, you're on the hook for supplying it yourself. So we just need to pull the loop out of the call to json.dump and inte...
Why hasn't functional programming taken over yet?
...ty. When Jane Smith changes her name you don't create a different employee called Jane Jones that is otherwise the same. There aren't two employees with two different names. It is natural to model this process as a mutation of an object, not as the construction of a new object.
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IsNothing versus Is Nothing
... down to the exact same code. When you use IsNothing() it actually makes a call to that method as opposed to just evaluating the expression.
The reason I would tend to lean towards using "Is Nothing" is when I'm negating it becomes "IsNot Nothing' rather than "Not IsNothing(object)" which I person...
Does a javascript if statement with multiple conditions test all of them?
... we have 3 Boolean variables, a, b, c that is a micro-optimization.
If we call 3 functions that return Boolean variables, each function may take a long time, and not only is it important to know this short circuits, but in what order. For example:
if (takesSeconds() && takesMinutes())
i...
How to activate an Anaconda environment
...ronment and Scripts\ on Windows).
Imagine you have created an environment called py33 by using:
conda create -n py33 python=3.3 anaconda
Here the folders are created by default in Anaconda\envs, so you need to set the PATH as:
set PATH=C:\Anaconda\envs\py33\Scripts;C:\Anaconda\envs\py33;%PATH%
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