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Return None if Dictionary key is not available
I need a way to get a dictionary value if its key exists, or simply return None , if it does not.
11 Answers
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Create an instance of a class from a string
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Related with great examples: stackoverflow.com/questions/493490/…
– John S.
Apr 24 '13 at 14:23
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Spring Cache @Cacheable - not working while calling from another method of the same bean
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I believe this is how it works. From what I remember reading, there is a proxy class generated that intercepts all requests and responds with the cached value, but 'internal' calls within the same class will not get the cached value.
From https:...
System.currentTimeMillis vs System.nanoTime
...m.currentTimeMillis() or System.nanoTime() when updating my object's positions in my game? Their change in movement is directly proportional to the elapsed time since the last call and I want to be as precise as possible.
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Best practices for Storyboard login screen, handling clearing of data upon logout
...roller is a Tab Bar Controller. I'm creating the login/logout process, and it's mostly working fine, but I've got a few issues. I need to know the BEST way to set all this up.
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Make an Installation program for C# applications and include .NET Framework installer into the setup
I've finished my C# application, but I have a little problem:
4 Answers
4
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What's the difference between window.location and document.location in JavaScript?
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According to the W3C, they are the same. In reality, for cross browser safety, you should use window.location rather than document.location.
See: http://www.w3.org/TR/html/browsers.html#dom-location
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Maximum and Minimum values for ints
..., which is the maximum value representable by a signed word. Equivalently, it's the size of the largest possible list or in-memory sequence.
Generally, the maximum value representable by an unsigned word will be sys.maxsize * 2 + 1, and the number of bits in a word will be math.log2(sys.maxsize * 2...
How do I append one string to another in Python?
...e.g.
s = ""
for i in range(n):
s+=str(i)
used to be O(n^2), but now it is O(n).
From the source (bytesobject.c):
void
PyBytes_ConcatAndDel(register PyObject **pv, register PyObject *w)
{
PyBytes_Concat(pv, w);
Py_XDECREF(w);
}
/* The following function breaks the notion that strin...
SSH Private Key Permissions using Git GUI or ssh-keygen are too open
Recently I've been unable to clone or push to github, and I'm trying to find the root cause.
25 Answers
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