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Deep copying an NSArray
Is there any built-in function that allows me to deep copy an NSMutableArray ?
6 Answers
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Javascript sort array by two fields
So the above code sorts the array by gsize - smallest to largest. It works good.
But if the gsize is the same I would like it to then sort by glow.
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What would cause an algorithm to have O(log n) complexity?
... classic example is binary search, a fast algorithm for searching a sorted array for a value. The algorithm works like this:
If the array is empty, return that the element isn't present in the array.
Otherwise:
Look at the middle element of the array.
If it's equal to the element we're looking ...
How is Python's List Implemented?
Is it a linked list, an array? I searched around and only found people guessing. My C knowledge isn't good enough to look at the source code.
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How to get index in Handlebars each helper?
...ts/handlebars.js/issues/250#issuecomment-9514811
The index of the current array item has been available for some time now via @index:
{{#each array}}
{{@index}}: {{this}}
{{/each}}
For object iteration, use @key instead:
{{#each object}}
{{@key}}: {{this}}
{{/each}}
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Convert form data to JavaScript object with jQuery
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serializeArray already does exactly that. You just need to massage the data into your required format:
function objectifyForm(formArray) {
//serialize data function
var returnArray = {};
for (var i = 0; i < formArray.le...
JavaScript: empty array, [ ] evaluates to true in conditional structures. Why is this?
...ng "0" (zero in quotes), "false" (false in quotes), empty functions, empty arrays, and empty objects.
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How do you create a random string that's suitable for a session ID in PostgreSQL?
...nd if;
for i in 1..length loop
result := result || chars[1+random()*(array_length(chars, 1)-1)];
end loop;
return result;
end;
$$ language plpgsql;
And the usage:
select random_string(15);
Example output:
select random_string(15) from generate_series(1,15);
random_string
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How to convert a NumPy array to PIL image applying matplotlib colormap
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Quite a busy one-liner, but here it is:
First ensure your NumPy array, myarray, is normalised with the max value at 1.0.
Apply the colormap directly to myarray.
Rescale to the 0-255 range.
Convert to integers, using np.uint8().
Use Image.fromarray().
And you're done:
from PIL import Im...
Unpacking array into separate variables in JavaScript
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You can use array's apply function if you want an array items to be passed as a function arguments.
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