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Determine if an object property is ko.observable
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to initialize std::vector from C-style array?
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or question specific:
std::vector<double> w_(w,w+len);
based on above: Don't forget that you can treat pointers as iterators
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What is 'Pattern Matching' in functional languages?
...nstead of assignment.
Long answer: Pattern matching is a form of dispatch based on the “shape” of the value that it's given. In a functional language, the datatypes that you define are usually what are known as discriminated unions or algebraic data types. For instance, what's a (linked) list...
Wolfram's Rule 34 in XKCD [closed]
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Wolfram has organized the 256 possible 1-D cellular automata based on nearest neighbors in this way:
RULES:
0: 0 0 0
1: 0 0 1
2: 0 1 0
3: 0 1 1
4: 1 0 0
5: 1 0 ...
Re-raise exception with a different type and message, preserving existing information
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In Scala, what exactly does 'val a: A = _' (underscore) mean?
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Search for executable files using find command
... is available.
GNU find comes with most Linux distros
By contrast, BSD-based platforms, including macOS, come with BSD find, which is less powerful.
As the scenario demands, -executable matches only files the current user can execute (there are edge cases.[1]).
The BSD find alternative offered...
Unicode Processing in C++
...uilt in facilities for it. That isn't always a possibility with older code bases though, with the standard being so new at present.
EDIT: To clarify, C++11 is Unicode aware in that it now has support for Unicode literals and Unicode strings. However, the standard library has only limited support fo...
UIBarButtonItem with custom image and no border
...ategories. Thanks @Vladimir for the inspiration. (note all my stuff is ARC-based) github.com/egold/UIKitConvenience/blob/master/UIKitConvenience/…
– Eric Goldberg
Jun 8 '12 at 21:52
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How to generate random SHA1 hash to use as ID in node.js?
... do this by generating 1 million random numbers and incrementing a counter based on the .length of each number.
// get distribution
var counts = [], rand, len;
for (var i=0; i<1000000; i++) {
rand = Math.random();
len = String(rand).length;
if (counts[len] === undefined) counts[len] = 0;
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