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Evaluating a mathematical expression in a string
This returns the following error:
11 Answers
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What are C++ functors and their uses?
I keep hearing a lot about functors in C++. Can someone give me an overview as to what they are and in what cases they would be useful?
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Finding local maxima/minima with Numpy in a 1D numpy array
Can you suggest a module function from numpy/scipy that can find local maxima/minima in a 1D numpy array? Obviously the simplest approach ever is to have a look at the nearest neighbours, but I would like to have an accepted solution that is part of the numpy distro.
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Python idiom to return first item or None
I'm sure there's a simpler way of doing this that's just not occurring to me.
23 Answers
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How to enable PHP short tags?
I have a web application on a Linux server which starts with <?
19 Answers
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How to update a value, given a key in a hashmap?
Suppose we have a HashMap<String, Integer> in Java.
17 Answers
17
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IntelliJ: Working on multiple projects
We build in maven multiple projects (let's name them A,B,C). Project A uses .jar of project B which uses .jar of project C.
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Java Logging vs Log4J [closed]
...ust to log
let's say some exceptions to a file with some nice rollover settings.
Or will the standard util.logging facility do the job as well?
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Difference between abstraction and encapsulation?
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Most answers here focus on OOP but encapsulation begins much earlier:
Every function is an encapsulation; in pseudocode:
point x = { 1, 4 }
point y = { 23, 42 }
numeric d = distance(x, y)
Here, distance encapsulates the calculation of the (Euclidean) distance between two...
How do I create a basic UIButton programmatically?
How can I create a basic UIButton programmatically? For example in my view controller, when executing the viewDidLoad method, three UIButton s will be created dynamically and its layout or properties are set.
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