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Are negative array indexes allowed in C?
... What happens on 64 bit systems (LP64) when you have a 32 bit int index which is negative ? Should the index get promoted to a 64 bit signed int prior to the address calculation ?
– Paul R
Oct 11 '10 at 16:02
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Why git can't do hard/soft resets by path?
...kout HEAD -- <path> does a hard reset for a path, replacing both the index and the working tree with the version from the HEAD commit.
– Dan Fabulich
Oct 5 '12 at 8:18
1
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jQuery to loop through elements with the same class
...t.querySelectorAll('.testimonial');
Array.from(elements).forEach((element, index) => {
// conditional logic here.. access element
});
In older browsers:
var testimonials = document.querySelectorAll('.testimonial');
Array.prototype.forEach.call(testimonials, function(element, index) {
// cond...
is it possible to change values of the array when doing foreach in javascript?
...
The callback is passed the element, the index, and the array itself.
arr.forEach(function(part, index, theArray) {
theArray[index] = "hello world";
});
edit — as noted in a comment, the .forEach() function can take a second argument, which will be used as th...
Set value for particular cell in pandas DataFrame using index
...iew. For this reason the docs recommend avoiding assignments with "chained indexing".
So the recommended alternative is
df.at['C', 'x'] = 10
which does modify df.
In [18]: %timeit df.set_value('C', 'x', 10)
100000 loops, best of 3: 2.9 µs per loop
In [20]: %timeit df['x']['C'] = 10
1000...
Random shuffling of an array
....current();
for (int i = ar.length - 1; i > 0; i--)
{
int index = rnd.nextInt(i + 1);
// Simple swap
int a = ar[index];
ar[index] = ar[i];
ar[i] = a;
}
}
}
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Is there a REAL performance difference between INT and VARCHAR primary keys?
...table, with values, say, frpom 1 to 50, but you did NOT put another unique index or key on the state postal code, (and, in my opinion, on the state name as well), then what's to stop someone from entering two rows with different surrogate key values but with the same postal code and/or state name? ...
How to Remove Array Element and Then Re-Index Array?
... I want to modify like below. I want to remove element (elements) of it by index and then re-index array. Is it possible?
9...
css3 drop shadow under another div, z-index not working [duplicate]
...blem is that the "middle" div is covering the drop shadow. i tried using z-index to put the header div about the middle div, but it's not working (the shadow is still being covered). when i put a break between the divs, i can see the shadow and therefore i know that part of the code is working prope...
How to get value at a specific index of array In JavaScript?
I have an array and simply want to get the element at index 1.
5 Answers
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