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How do I get bit-by-bit data from an integer value in C?
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If you want the k-th bit of n, then do
(n & ( 1 << k )) >> k
Here we create a mask, apply the mask to n, and then right shift the masked value to get just the bit we want. We could write it out more fully as:
int mas...
multiprocessing: How do I share a dict among multiple processes?
A program that creates several processes that work on a join-able queue, Q , and may eventually manipulate a global dictionary D to store results. (so each child process may use D to store its result and also see what results the other child processes are producing)
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Can the Unix list command 'ls' output numerical chmod permissions?
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it almost can ..
ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/) \
*2^(8-i));if(k)printf("%0o ",k);print}'
share
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Select values from XML field in SQL Server 2008
Just looking at my XML field, my rows look like this:
9 Answers
9
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For..In loops in JavaScript - key value pairs
I was wondering if there's a way to do something like a PHP foreach loop in JavaScript. The functionality I'm looking for is something like this PHP Snippet:
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Clean ways to write multiple 'for' loops
...gt; myData;
public:
// ...
int& operator()( int i, int j, int k )
{
return myData[ ((i * y) + j) * z + k ];
}
};
Or if you want to index using [][][], you need an operator[]
which returns a proxy.
Once you've done this, if you find that you constantly have to
iterate ...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
I had an interesting job interview experience a while back. The question started really easy:
47 Answers
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How to dump a table to console?
...aying the contents of a table which contains nested tables (n-deep). I'd like to just dump it to std out or the console via a print statement or something quick and dirty but I can't figure out how. I'm looking for the rough equivalent that I'd get when printing an NSDictionary using gdb.
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Java 8 NullPointerException in Collectors.toMap
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You can work around this known bug in OpenJDK with this:
Map<Integer, Boolean> collect = list.stream()
.collect(HashMap::new, (m,v)->m.put(v.getId(), v.getAnswer()), HashMap::putAll);
It is not that much pretty, but it...
What are the differences between a multidimensional array and an array of arrays in C#?
... int32 'value') cil managed
{
// Code size 7 (0x7)
.maxstack 8
IL_0000: ldarg.0
IL_0001: ldarg.1
IL_0002: ldelem.ref
IL_0003: ldarg.2
IL_0004: ldarg.3
IL_0005: stelem.i4
IL_0006: ret
} // end of method Program::SetElementAt
.method private hidebysig static void...