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Find XOR of all numbers in a given range
...ven a large range [a,b] where 'a' and 'b' can be typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
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Mapping two integers to one, in a unique and deterministic way
...sy to define a bijection f : Z -> N, like so:
f(n) = n * 2 if n >= 0
f(n) = -n * 2 - 1 if n < 0
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Compare double to zero using epsilon
...there is a 52-bit mantissa and 11-bit exponent. Let's break it to bits:
1.0000 00000000 00000000 00000000 00000000 00000000 00000000 × 2^0 = 1
The smallest representable number greater than 1:
1.0000 00000000 00000000 00000000 00000000 00000000 00000001 × 2^0 = 1 + 2^-52
Therefore:
epsilon ...
How to add a spinner icon to button when it's in the Loading state?
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If you look at the bootstrap-button.js source, you'll see that the bootstrap plugin replaces th...
UIView Hide/Show with animation
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Objective C
[UIView transitionWithView:button
duration:0.4
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
button.hidden = YES;
}
completion:NULL];
Swift
UIView.transitio...
How to generate a range of numbers between two numbers?
I have two numbers as input from the user, like for example 1000 and 1050 .
28 Answers
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Replacing NULL with 0 in a SQL server query
...ults for the first three columns I get NULL . How can I replace it with 0 ?
11 Answers
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How to get the primary IP address of the local machine on Linux and OS X? [closed]
... return me the primary (first) IP address of the localhost, other than 127.0.0.1
31 Answers
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Removing leading zeroes from a field in a SQL statement
...ve the leading zeroes from a particular field, which is a simple VARCHAR(10) field. So, for example, if the field contains '00001A', the SELECT statement needs to return the data as '1A'.
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Using async/await for multiple tasks
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edited Jul 7 '16 at 10:41
answered Sep 9 '12 at 11:35
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