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Find duplicate lines in a file and count how many time each line was duplicated?

... This is what I do however algorithmically this is doesnt seem to be the most efficient approach (O(n log n)*avg_line_len where n is number of lines). I'm working on files that are several gigabytes large, so performance is a key issue. I wonder whether there is ...
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What's the difference between REST & RESTful

...a dissertation by Roy Fielding, REST is an "architectural style" that basically exploits the existing technology and protocols of the Web. RESTful is typically used to refer to web services implementing such an architecture. ...
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Collection was modified; enumeration operation may not execute

... Is that a complete example? I have a class (_dictionary obj below) that contains a generic Dictionary<string,int> named MarkerFrequencies, but doing this didn't instantly solve the crash: lock (_dictionary.MarkerFrequencies) { foreach (KeyValuePair<string, int...
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How to replace a string in a SQL Server Table Column

... I'd typically add where path like '%oldstring%' if there was a lot of data. – Derek Tomes Nov 2 '15 at 20:48 ...
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WebSockets protocol vs HTTP

...kets is better for situations that involve low-latency communication especially for low latency for client to server messages. For server to client data you can get fairly low latency using long-held connections and chunked transfer. However, this doesn't help with client to server latency which req...
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Uploading base64 encoded Image to Amazon S3 via Node.js

... deep night coding session and created a small node.js/JS (well actually CoffeeScript, but CoffeeScript is just JavaScript so lets say JS) app. ...
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Can I change multiplier property for NSLayoutConstraint?

...them, since "Activating or deactivating the constraint calls addConstraint(_:) and removeConstraint(_:) on the view that is the closest common ancestor of the items managed by this constraint". – qix Jan 4 '17 at 5:26 ...
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Different types of thread-safe Sets in Java

... 1) The CopyOnWriteArraySet is a quite simple implementation - it basically has a list of elements in an array, and when changing the list, it copies the array. Iterations and other accesses which are running at this time continue with the old array, avoiding necessity of synchronization between...
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How to get a list of column names on Sqlite3 database?

... PRAGMA table_info(table_name); will get you a list of all the column names. share | improve this answer | follow | ...
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RESTful Authentication

...ZGRpbjpvcGVuIHNlc2FtZQ== It's easy to implement, available by default on all browsers, but has some known drawbacks, like the awful authentication window displayed on the Browser, which will persist (there is no LogOut-like feature here), some server-side additional CPU consumption, and the fact t...