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How do I resolve ClassNotFoundException?
...ronments. We could say that all any program ever does is resolve such definitions... the question is always what/where is the definition and which version did you mean?
– masterxilo
Nov 23 '18 at 22:44
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String.Empty versus “” [duplicate]
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It's not different.
http://msdn.microsoft.com/en-us/library/system.string.empty.aspx:
The value of this field is the zero-length string, "".
In application code, this field is most commonly used in assignments to initialize ...
How do I make a list of data frames?
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This isn't related to your question, but you want to use = and not <- within the function call. If you use <-, you'll end up creating variables y1 and y2 in whatever environment you're working in:
d1 <- data.frame(y1 <- c(1, 2, 3), y2 <- c(4, 5, 6))
y1
# [1] 1 2 3
y2
# [1] 4 5 6
T...
How to handle button clicks using the XML onClick within Fragments
Pre-Honeycomb (Android 3), each Activity was registered to handle button clicks via the onClick tag in a Layout's XML:
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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...
Javascript shorthand ternary operator
... startingNumber || 1;
Something like that what you're looking for, where it defaults if undefined?
var foo = bar || 1; // 1
var bar = 2;
foo = bar || 1; // 2
By the way, this works for a lot of scenarios, including objects:
var foo = bar || {}; // secure an object is assigned when bar is a...
SparseArray vs HashMap
I can think of several reasons why HashMap s with integer keys are much better than SparseArray s:
7 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:...
Are Java static calls more or less expensive than non-static calls?
Is there any performance benefit one way or another? Is it compiler/VM specific? I am using Hotspot.
12 Answers
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