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Convert a series of parent-child relationships into a hierarchical tree?
...ed function can be found at the end of this answer).
First initialize the array of child/parent pairs:
$tree = array(
'H' => 'G',
'F' => 'G',
'G' => 'D',
'E' => 'D',
'A' => 'E',
'B' => 'C',
'C' => 'E',
'D' => null
);
Then the function that ...
Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
1) When an array is passed as an argument to a method or function, is it passed by reference, or by value?
8 Answers
...
How to merge two arrays in JavaScript and de-duplicate items
I have two JavaScript arrays:
76 Answers
76
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Remove empty array elements
Some elements in my array are empty strings based on what the user has submitted. I need to remove those elements. I have this:
...
Transposing a NumPy array
...
It's working exactly as it's supposed to. The transpose of a 1D array is still a 1D array! (If you're used to matlab, it fundamentally doesn't have a concept of a 1D array. Matlab's "1D" arrays are 2D.)
If you want to turn your 1D vector into a 2D array and then transpose it, just slice...
Create an array with same element repeated multiple times
...
You can do it like this:
function fillArray(value, len) {
if (len == 0) return [];
var a = [value];
while (a.length * 2 <= len) a = a.concat(a);
if (a.length < len) a = a.concat(a.slice(0, len - a.length));
return a;
}
It doubles the array in ea...
Add an element to an array in Swift
Suppose I have an array, for example:
13 Answers
13
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How do I declare a 2d array in C++ using new?
How do i declare a 2d array using new?
24 Answers
24
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How to Remove Array Element and Then Re-Index Array?
I have some troubles with an array. I have one array that I want to modify like below. I want to remove element (elements) of it by index and then re-index array. Is it possible?
...
How to convert xml into array in php?
I want to convert below XML to PHP array. Any suggestions on how I can do this?
9 Answers
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