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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell

...s changes the time to 8.5 seconds. factorCount' is constantly applying two extra arguments that never change (number, sqrt). A worker/wrapper transformation gives us: $ time ./so 842161320 real 0m7.954s user 0m7.944s sys 0m0.004s That's right, 7.95 seconds. Consistently...
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Difference between partition key, composite key and clustering key in Cassandra?

...e partition key, i.e. a partition key formed of multiple columns, using an extra set of parentheses to define which columns forms the partition key. Partitioning and Clustering The PRIMARY KEY definition is made up of two parts: the Partition Key and the Clustering Columns. The first part maps to t...
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How to configure Ruby on Rails with no database?

...-record option to generate an application without a database Notice the extra hyphen '-' as opposed to previous Rails versions. rails new myApp --skip-active-record share | improve this answer ...
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Why would iterating over a List be faster than indexing through it?

...effectively O(N^2) just to traverse the list! If instead I did this: for(String s: list) { System.out.println(s); } then what happens is this: head -> print head -> item1 -> print item1 -> item2 -> print item2 etc. all in a single traversal, which is O(N). Now, going to th...
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Calculate last day of month in JavaScript

...entral Standard Time) Output differences are due to differences in the toString() implementation, not because the dates are different. Of course, just because the browsers identified above use 0 as the last day of the previous month does not mean they will continue to do so, or that browsers not ...
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What is “callback hell” and how and why does RX solve it?

...appens after B is called listening to 'aFinished'. You can then easily add extra steps or extend this kind of behaviour, and can easily test that your code executes in order by merely broadcasting events in your test case. s...
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Is there an exponent operator in C#?

... #region --------------- Methods ---------------- public override string ToString() { return _value.ToString(); } #endregion ------------ Methods ---------------- #region -------------- Operators --------------- // Change the ^ operator...
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Current time in microseconds in java

...Format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ; } public String get() { long microSeconds = (System.nanoTime() - this.startNanoseconds) / 1000 ; long date = this.startDate + (microSeconds/1000) ; return this.dateFormat.format(date) + String.format("%03d", microSecon...
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Application_Start not firing?

...r of stackoverflow.com/a/7655582/11635 - consider deleting and putting any extra info in a comment – Ruben Bartelink Feb 25 '16 at 14:55 ...
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ASP.NET MVC - TempData - Good or bad practice

... Why do that extra work when you can post directly back to Products/New? What value does Products/Create add? – mpen Dec 10 '11 at 21:07 ...