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Rails mapping array of hashes onto single hash
I have an array of hashes like so:
4 Answers
4
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How can I use a C++ library from node.js?
...js for a bit, it appears that swig cannot handle C++ functions that return arrays (more precisely: functions that return pointers to arrays). That is, it seems you cannot build a function in C++ that returns something like a JavaScript array and have swig automatically convert it for you.
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How to find first element of array matching a boolean condition in JavaScript?
...if there's a known, built-in/elegant way to find the first element of a JS array matching a given condition. A C# equivalent would be List.Find .
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How to avoid scientific notation for large numbers in JavaScript?
...)[1]);
if (e) {
x *= Math.pow(10,e-1);
x = '0.' + (new Array(e)).join('0') + x.toString().substring(2);
}
} else {
var e = parseInt(x.toString().split('+')[1]);
if (e > 20) {
e -= 20;
x /= Math.pow(10,e);
x += (new Array(e+1)).join('0');
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Is there any particular difference between intval and casting to int - `(int) X`?
...to sanitize integers for inclusion into a SQL IN() clause by passing it to array_map. Here is an example:
$ids = implode(",", array_map('intval', $_POST['array_of_integers']));
$sql = "SELECT * FROM table WHERE ids IN ($ids)";
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How to determine if object is in array [duplicate]
I need to determine if an object already exists in an array in javascript.
11 Answers
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Array initializing in Scala
... ,just started learning it today.I would like to know how to initialize an array in Scala.
6 Answers
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Use numpy array in shared memory for multiprocessing
I would like to use a numpy array in shared memory for use with the multiprocessing module. The difficulty is using it like a numpy array, and not just as a ctypes array.
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How do I remove an array item in TypeScript?
I have an array that I've created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it?
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Ruby capitalize every word first letter
...method syntax in map is a concise way to call a method on each item in the array. You can then call join to turn that array into a string. The * ' ' is an alternative way to call join. You can think of it as multiplying the items in the array together to create a string.
– Andr...