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ActiveRecord.find(array_of_ids), preserving order
When you do Something.find(array_of_ids) in Rails, the order of the resulting array does not depend on the order of array_of_ids .
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Why doesn't JavaScript have a last method? [closed]
Its kinda weird that the JavaScript Array class does not offer a last method to retrieve the last element of an array. I know the solution is simple (Ar[Ar.length-1] ), but, still, this is too frequently used.
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How to convert a boolean array to an int array
I use Scilab, and want to convert an array of booleans into an array of integers:
6 Answers
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How to parse a CSV file using PHP [duplicate]
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Handy one liner to parse a CSV file into an array
$csv = array_map('str_getcsv', file('data.csv'));
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Difference between passing array and array pointer into function in C
...arators (including prototypes)
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7 A declaration of a parameter as ‘‘array of type’’ shall be adjusted to ‘‘qualified pointer to
type’’, where the type qualifiers (if any) are those specified within the [ and ] of the
array type derivation. If the keyword static also appears within...
How to count certain elements in array?
I have an array:
19 Answers
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Using an integer as a key in an associative array in JavaScript
When I create a new JavaScript array, and use an integer as a key, each element of that array up to the integer is created as undefined.
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Efficient evaluation of a function at every cell of a NumPy array
Given a NumPy array A , what is the fastest/most efficient way to apply the same function, f , to every cell?
6 Ans...
Difference between JSONObject and JSONArray
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When you are working with JSON data in Android, you would use JSONArray to parse JSON which starts with the array brackets. Arrays in JSON are used to organize a collection of related items (Which could be JSON objects).
For example: [{"name":"item 1"},{"name": "item2} ]
On the other hand...
Empty arrays seem to equal true and false at the same time
Empty arrays are true but they're also equal to false.
9 Answers
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