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How to make --no-ri --no-rdoc the default for gem install?
..., thus the current answer to only include the gem directive is the correct one.
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Is it safe to ignore the possibility of SHA collisions in practice?
Let's say we have a billion unique images, one megabyte each.
We calculate the SHA-256 hash for the contents of each file.
The possibility of collision depends on:
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What's the nearest substitute for a function pointer in Java?
...ctly the same thing, except for a small calculation that's going to change one line of code. This is a perfect application for passing in a function pointer to replace that one line, but Java doesn't have function pointers. What's my best alternative?
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Store boolean value in SQLite
...: false;
If you want to explore sqlite, here is a tutorial.
I have given one answer here. It is working for them.
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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
...so need an algorithm for factorization over finite fields, for example the one by Berlekamp or Cantor-Zassenhaus.
High level pseudocode for constant k:
Compute i-th powers of given numbers
Subtract to get sums of i-th powers of unknown numbers. Call the sums bi.
Use Newton's identities to compute...
Determine a user's timezone
...here a standard way for a web server to be able to determine a user's timezone within a web page?
24 Answers
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iOS: How does one animate to new autolayout constraint (height)
...lass=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49....
SOAP vs REST (differences)
...st tries to be) and the second is an architectural style. This is probably one of the sources of confusion around it, since people tend to call REST any HTTP API that isn't SOAP.
Pushing things a little and trying to establish a comparison, the main difference between SOAP and REST is the degree of...
jquery .html() vs .append()
...y's approach isn't quite as simple as element.innerHTML = ... -- as I mentioned, there are a bunch of checks and optimisations occurring.
The correct technique depends heavily on the situation. If you want to create a large number of identical elements, then the last thing you want to do is crea...
How do I concatenate or merge arrays in Swift?
...ray
let c = a + b
print(c) // [1.0, 2.0, 3.0, 4.0, 5.0, 6.0]
or append one array to the other with += (or append):
a += b
// Or:
a.append(contentsOf: b) // Swift 3
a.appendContentsOf(b) // Swift 2
a.extend(b) // Swift 1.2
print(a) // [1.0, 2.0, 3.0, 4.0, 5.0, 6.0]
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