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Repeat string to certain length

What is an efficient way to repeat a string to a certain length? Eg: repeat('abc', 7) -> 'abcabca' 13 Answers ...
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What is pseudopolynomial time? How does it differ from polynomial time?

What is pseudopolynomial time ? How does it differ from polynomial time? Some algorithms that run in pseudopolynomial time have runtimes like O(nW) (for the 0/1 Knapsack Problem ) or O(√n) (for trial division ); why doesn't that count as polynomial time? ...
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What is the difference between Reader and InputStream?

What is the difference between Reader and InputStream? And when to use what? If I can use Reader for reading characters why I will use inputstream, I guess to read objects? ...
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Interface Builder: What are the UIView's Layout iOS 6/7 Deltas for?

I just noticed the iOS 6/7 Delta property found under the UIView's structs layout. 6 Answers ...
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How to uncompress a tar.gz in another directory

I have an archive 4 Answers 4 ...
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Iterate over object keys in node.js

Since Javascript 1.7 there is an Iterator object, which allows this: 5 Answers 5 ...
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LIKE vs CONTAINS on SQL Server

Which one of the following queries is faster (LIKE vs CONTAINS)? 4 Answers 4 ...
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What is the best practice for making an AJAX call in Angular.js?

I was reading this article: http://eviltrout.com/2013/06/15/ember-vs-angular.html 4 Answers ...
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Hibernate - Batch update returned unexpected row count from update: 0 actual row count: 0 expected:

I get following hibernate error. I am able to identify the function which causes the issue. Unfortunately there are several DB calls in the function. I am unable to find the line which causes the issue since hibernate flush the session at the end of the transaction. The below mentioned hibernate err...
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what is the unsigned datatype?

I've seen this unsigned "typeless" type used a couple of times, but never seen an explanation for it. I suppose there's a corresponding signed type. Here's an example: ...