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Is there a practical use for weak references? [duplicate]
... cache of a particular size and fine tune the cache size if necessary. Far from optimal if the program will run on lots of different configurations - in that case the tiered approach may be worth the additional complexities.
– Voo
Jan 9 '12 at 18:45
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How to deal with “data of class uneval” error from ggplot2?
...w.com%2fquestions%2f16486819%2fhow-to-deal-with-data-of-class-uneval-error-from-ggplot2%23new-answer', 'question_page');
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What is Bit Masking?
...; value;
}
Here is a fairly common use-case: Extracting individual bytes from a larger word. We define the high-order bits in the word as the first byte. We use two operators for this, &, and >> (shift right). This is how we can extract the four bytes from a 32-bit integer:
void more_...
How to extract URL parameters from a URL with Ruby or Rails?
I have some URLs, like
7 Answers
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What is an idempotent operation?
...re than once with the same input parameters. For example, removing an item from a set can be considered an idempotent operation on the set.
In mathematics, an idempotent operation is one where f(f(x)) = f(x). For example, the abs() function is idempotent because abs(abs(x)) = abs(x) for all x.
Th...
How to create a release signed apk file using Gradle?
...ble backslashes (\\), not Windows single backslashes. To create a keystore from the Windows command prompt, see stackoverflow.com/questions/3997748/how-can-i-create-a-keystore
– Anachronist
Feb 6 '14 at 23:15
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JavaScript OOP in NodeJS: how?
...thod borrowing" instead of vertical inheritance. You don't need to inherit from a "class" to use its method on your class. For instance:
var method = List.prototype;
function List() {
}
method.add = Array.prototype.push;
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var a = new List();
a.add(3);
console.log(a[0]) //3;
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Java 8 Iterable.forEach() vs foreach loop
...r;
}
Can't handle checked exceptions. Lambdas aren't actually forbidden from throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code that throws checked exceptions must wrap them in try-catch or Throwables.propagate(). But even if you do ...
namespaces for enum types - best practices
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Original C++03 answer:
The benefit from a namespace (over a class) is that you can use using declarations when you want.
The problem with using a namespace is that namespaces can be expanded elsewhere in the code. In a large project, you would not be guarant...
Generating a SHA-256 hash from the Linux command line
I know the string "foobar" generates the SHA-256 hash c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2 using
http://hash.online-convert.com/sha256-generator
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