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Why does MYSQL higher LIMIT offset slow the query down?
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SELECT * FROM large WHERE id > 10000 ORDER BY id LIMIT 30
would be fast(er), and would return the same results provided that there are no missing ids (i.e. gaps).
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How do I pass variables and data from PHP to JavaScript?
...Script in a sense that there is no PHP directly in the JavaScript.
Pros
Fast - DOM operations are often quick, and you can store and access a lot of data relatively quickly.
Cons
Potentially Unsemantic Markup - Usually, what happens is that you use some sort of <input type=hidden> to st...
How to write DataFrame to postgres table?
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Faster option:
The following code will copy your Pandas DF to postgres DB much faster than df.to_sql method and you won't need any intermediate csv file to store the df.
Create an engine based on your DB specifications.
C...
Fastest hash for non-cryptographic uses?
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CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32.php
But you should be aware that CRC32 will have more collisions than MD5 or even SHA-1 hashes, simply because of the reduced length (32 bits co...
How do I check if a given string is a legal/valid file name under Windows?
...ummary>
/// The set of invalid filename characters, kept sorted for fast binary search
/// </summary>
private readonly static char[] invalidFilenameChars;
/// <summary>
/// The set of invalid path characters, kept sorted for fast binary search
/// </summary&...
Hashset vs Treeset
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HashSet is much faster than TreeSet (constant-time versus log-time for most operations like add, remove and contains) but offers no ordering guarantees like TreeSet.
HashSet
the class offers constant time performance for the basic operati...
In C#, how can I create a TextReader object from a string (without writing to disk)
I'm using A Fast CSV Reader to parse some pasted text into a webpage. The Fast CSV reader requires a TextReader object, and all I have is a string. What's the best way to convert a string into a TextReader object on the fly?
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Why can tuples contain mutable items?
...s question, we have to think about the purpose tuples serve: they serve as fast, general-purpose sequences. With that in mind, it becomes quite obvious why tuples are immutable but can contain mutable objects. To wit:
Tuples are fast and memory efficient: Tuples are faster to create than lists bec...
Generate a Hash from string in Javascript
...Java. The hash << 5 - hash is the same as hash * 31 + char but a LOT faster. It's nice because it's so fast, and 31 is a small prime. Win win there.
– corsiKa
Sep 30 '11 at 21:59
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How do the major C# DI/IoC frameworks compare? [closed]
...toFac
LightCore (site is German)
LinFu
Ninject
Petite
Simple Injector (the fastest of all contestants)
Spring.NET
StructureMap
Unity
Windsor
Hiro
Here is a quick summary from the post:
Conclusion
Ninject is definitely the slowest container.
MEF, LinFu and Spring.NET are faster than Ninject, but st...