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What's this =! operator? [duplicate]
...rounding binary operators with spaces, just to make it clear to the humans reading the code what the compiler is thinking.
I'm a bit surprised nobody else mentioned this, but then again I may be the only SO user to have ever touched a C compiler that old.
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...used). Thus, to store a raw stream ~3.5M of RAM will be needed. Somebody already said it doesn't seem to be feasible, but I would say the task can be solved if the input is "good enough". Basically, the idea is to compress the input data with compression factor 0.29 or higher and do sorting in a pro...
application/x-www-form-urlencoded or multipart/form-data?
...The limit is enforced by the server receiving the POST request. See this thread for more discussion: stackoverflow.com/questions/2364840/…
– Matt Bridges
May 28 '13 at 13:23
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SHA512 vs. Blowfish and Bcrypt [closed]
...r. If you don't get why slowness is an advantage in this particular game, read the article you linked to again (scroll down to "Speed is exactly what you don’t want in a password hash function.").
You can of course build a secure password hashing algorithm around SHA-512 by iterating it thousand...
Double Negation in C++
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@Noldorin, I think it improves readability - if you know what it means, it is simple, neat and logical.
– jwg
Jun 4 '14 at 9:45
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Finding JavaScript memory leaks with Chrome
...ed between Snapshots 1 and 2 in Snapshot 3's "Summary" view.
Now you are ready to find memory leaks!
You will notice nodes of a few different colors. Red nodes do not have direct references from Javascript to them, but are alive because they are part of a detached DOM tree. There may be a node i...
MySQL select 10 random rows from 600K rows fast
... past a certain point because MySQL has to actually sort ALL records after reading each one; once that operation hits the hard disc you can feel the difference.
– Ja͢ck
Apr 10 '13 at 7:48
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SQL Server Operating system error 5: “5(Access is denied.)”
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SQL Server database engine service account must have permissions to read/write in the new folder.
Check out this
To fix, I did the following:
Added the Administrators Group to the file security permissions with
full control for the Data file (S:) and the Log File (T:).
Attach...
Why is std::map implemented as a red-black tree?
... the tree modification is O(1) or O(log n) because the main operation is already O(log n). even after all the slightly extra work that AVL trees do results in a more tightly balanced tree which leads to slightly faster lookups. so it is a perfectly valid tradeoff and does not make AVL trees inferio...
Random number from a range in a Bash Script
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If I’m understanding this correctly, you are spreading 32,000 numbers amid a range of 1,000,000,000. But they will only hit on multiples of 2^15—you’re skip-counting by 2^15’s, not filling in all digits between 1 and 2^30 evenly, which is what a uniform distribution...