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How does a hash table work?
...) and calculates a number from it.
For simplicity, let's say that it just converts each letter and symbol into a number and sums them all up. In reality, it's a lot more complicated than that, but let's leave it at that for now.
The beauty of such an algorithm is that if you feed the same input in...
Why sizeof int is wrong, while sizeof(int) is right?
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The following could be ambiguous:
sizeof int * + 1
Is that (sizeof (int*)) + 1, or (sizeof(int)) * (+1)?
Obviously the C language could have introduced a rule to resolve the ambiguity, but I can imagine why it didn't bother. With the language as it stands, a type...
“unpacking” a tuple to call a matching function pointer
...f values, which will later be used as arguments for a call to a function pointer which matches the stored types.
8 Answers
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Combining C++ and C - how does #ifdef __cplusplus work?
...acy C code. We've started writing in C++, with the intent to eventually convert the legacy code, as well. I'm a little confused about how the C and C++ interact. I understand that by wrapping the C code with extern "C" the C++ compiler will not mangle the C code's names, but I'm not ent...
How to compare 2 files fast using .NET?
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Make sure to take into account where your files are located. If you're comparing local files to a back-up half-way across the world (or over a network with horrible bandwidth) you may be better off to hash first and send a checksum over the n...
Display current time in 12 hour format with AM/PM
...nks @RuchiraGayanRanaweei... i just wondering to capture the 24 format and convert it into the AM/PM format...
– gumuruh
Aug 6 '14 at 3:26
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Append values to a set in Python
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The way I like to do this is to convert both the original set and the values I'd like to add into lists, add them, and then convert them back into a set, like this:
setMenu = {"Eggs", "Bacon"}
print(setMenu)
> {'Bacon', 'Eggs'}
setMenu = set(list(setMen...
Mod of negative number is melting my brain
I'm trying to mod an integer to get an array position so that it will loop round. Doing i %
arrayLength works fine for positive numbers but for negative numbers it all goes wrong.
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LINQ Aggregate algorithm explained
...regate is that it performs an operation on each element of the list taking into account the operations that have gone before. That is to say it performs the action on the first and second element and carries the result forward. Then it operates on the previous result and the third element and carrie...
What are Aggregates and PODs and how/why are they special?
...oth aggregates and PODs (Plain Old Data) take time and read it. If you are interested just in aggregates, read only the first part. If you are interested only in PODs then you must first read the definition, implications, and examples of aggregates and then you may jump to PODs but I would still rec...