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Are negative array indexes allowed in C?
... UB. Merely computing somearray-2 is undefined unless the result is in the range from the start of somearray to 1 past its end.
– RBerteig
Aug 13 '10 at 9:12
35
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iphone Core Data Unresolved error while saving
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Also very useful. Specially when you get this raw \n\n\n core data entity description strings.
– Lukasz
Oct 5 '11 at 13:54
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Regex to validate password strength
... let results = regex.matchesInString(text,
options: [], range: NSMakeRange(0, nsString.length))
return results.map { nsString.substringWithRange($0.range)}
} catch let error as NSError {
print("invalid regex: \(error.localizedDescription)")
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Run a Python script from another Python script, passing in arguments [duplicate]
...ld, you will be able to call a function inside script1 directly:
for i in range(whatever):
script1.some_function(i)
If necessary, you can hack sys.argv. There's a neat way of doing this using a context manager to ensure that you don't make any permanent changes.
import contextlib
@contextlib...
Iterating over every two elements in a list
...
A simple solution.
l = [1, 2, 3, 4, 5, 6]
for i in range(0, len(l), 2):
print str(l[i]), '+', str(l[i + 1]), '=', str(l[i] + l[i + 1])
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Are +0 and -0 the same?
... -0.
This could be avoided by subtracting 1 from the integer value so it ranged from -1 to -2^16, but this would be inconvenient.
A more common approach is to store integers in 'two complements', but apparently ECMAscript has chosen not to. In this method numbers range from 0000 to 7FFF positive....
Signed versus Unsigned Integers
...e number.
When using two's complement, the variable can represent a larger range (by one) of negative numbers than positive numbers. This is because zero is included in the 'positive' numbers (since the sign bit is not set for zero), but not the negative numbers. This means that the absolute value ...
What are the advantages of using the C++ Boost libraries? [closed]
...ively because:
It is open-source and peer-reviewed.
It provides a wide range of platform agnostic functionality that STL missed.
It is a complement to STL rather than a replacement.
Many of Boost developers are on the C++ standard committee. In fact, many parts of Boost is considered to be inclu...
Visual Studio debugging “quick watch” tool and lambda expressions
...sions, which take the form .Where("Id = @0", 2) - it doesn't have the full range of methods available in standard Linq, and doesn't have the full power of lambda expressions, but still, it's better than nothing!
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What RSA key length should I use for my SSL certificates?
... With any given "equivalent level of security", you'll see very different raw numbers for the key lengths in symmetric versus asymmetric.
– Ti Strga
Apr 1 '14 at 22:18
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