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Javascript - remove an array item by value [duplicate]
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You'll want to use JavaScript's Array splice method:
var tag_story = [1,3,56,6,8,90],
id_tag = 90,
position = tag_story.indexOf(id_tag);
if ( ~position ) tag_story.splice(position, 1);
P.S. For an explanation of that cool ~ tilde shortcut, see t...
Cannot use object of type stdClass as array?
...ta (I saw it using print_r ), but when I try to access to info inside the array I get:
15 Answers
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Why is [1,2] + [3,4] = “1,23,4” in JavaScript?
I wanted to add the elements of an array into another, so I tried this:
13 Answers
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Converting String to “Character” array in Java
I want to convert a String to an array of objects of Character class but I am unable to perform the conversion. I know that I can convert a String to an array of primitive datatype type "char" with the toCharArray() method but it doesn't help in converting a String to an array of objects of C...
How to find the sum of an array of numbers
Given an array [1, 2, 3, 4] , how can I find the sum of its elements? (In this case, the sum would be 10 .)
43 Answers
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Why does this iterative list-growing code give IndexError: list assignment index out of range?
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j = list(i)
Alternatively, if you wanted to use the Python list like an array in other languages, then you could pre-create a list with its elements set to a null value (None in the example below), and later, overwrite the values in specific positions:
i = [1, 2, 3, 5, 8, 13]
j = [None] * len(i)...
how to permit an array with strong parameters
...k::Test::UploadedFile.
To declare that the value in params must be an array of permitted scalar values map the key to an empty array:
params.permit(:id => [])
In my app, the category_ids are passed to the create action in an array
"category_ids"=>["", "2"],
Therefore, when declarin...
Find element's index in pandas Series
...1,1,2,2,3,4]).get_loc(2)
Out[5]: slice(2, 4, None)
Will return a boolean array if non-contiguous returns
In [6]: Index([1,1,2,1,3,2,4]).get_loc(2)
Out[6]: array([False, False, True, False, False, True, False], dtype=bool)
Uses a hashtable internally, so fast
In [7]: s = Series(randint(0,10,1...
Java: how to convert HashMap to array
I need to convert a HashMap<String, Object> to an array; could anyone show me how it's done?
12 Answers
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How can I check whether an array is null / empty?
I have an int array which has no elements and I'm trying to check whether it's empty.
13 Answers
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