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What is the difference between trie and radix trie data structures?
... Actually in a radix tree you can't have more than a single edge starting with the same letter so you can use the same constant indexing.
– Ivaylo Strandjev
Dec 13 '13 at 6:19
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Why does Java switch on contiguous ints appear to run faster with added cases?
... a switch table (bytecode instruction tableswitch).
However, once the JIT starts its job and compiles the bytecode into assembly, the tableswitch instruction does not always result in an array of pointers: sometimes the switch table is transformed into what looks like a lookupswitch (similar to an ...
Usage of __slots__?
...y, should you encourage a newbie to learn about them and use them from the start?
– freethebees
Jul 11 '19 at 9:59
Gre...
mmap() vs. reading blocks
... more-or-less also includes the case where the file wasn't fully cached to start with, but where the OS read-ahead is good enough to make it appear so (i.e., the page is usually cached by the time you want it). This is a subtle issue though because the way read-ahead works is often quite different b...
insert vs emplace vs operator[] in c++ map
...e only two: operator[] and insert (different flavors of insert). So I will start explaining those.
The operator[] is a find-or-add operator. It will try to find an element with the given key inside the map, and if it exists it will return a reference to the stored value. If it does not, it will cre...
Using Auto Layout in UITableView for dynamic cell layouts & variable row heights
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When we scroll , label starts taking appearing in multiple lines and row's height also dowsn't increase
– Karanveer Singh
Jun 18 '19 at 7:00
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Schema for a multilanguage database
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This is an interesting issue, so let's necromance.
Let's start by the problems of method 1:
Problem: You're denormalizing to save speed.
In SQL (except PostGreSQL with hstore), you can't pass a parameter language, and say:
SELECT ['DESCRIPTION_' + @in_language] FROM T_Products
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Callback functions in C++
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I know this is old, but because I almost started doing this and it ended up not working on my setup (mingw), if you're using GCC version < 4.x, this method is not supported. Some of the dependencies I'm using won't compile without a lot of work in gcc version &g...
Unicode equivalents for \w and \b in Java regular expressions?
...iles as matching /^(\X*\R)*\R?$/, but you can’t if you have a \pM at the start of the file, or even of a line. So they’ve eXtended it to always match at least one character. It always did, but now it makes the above pattern work. […continued…]
– tchrist
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Node.js Best Practice Exception Handling
I just started trying out node.js a few days ago. I've realized that the Node is terminated whenever I have an unhandled exception in my program. This is different than the normal server container that I have been exposed to where only the Worker Thread dies when unhandled exceptions occur and the c...