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Why is it recommended to have empty line in the end of a source file?

Some code style tools recommend this and I remember seeing some unix command line tools warning about missing empty line. 8...
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How do I unset an element in an array in javascript?

...ow do I remove the key 'bar' from an array foo so that 'bar' won't show up in 6 Answers ...
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What are the possible values of the Hibernate hbm2ddl.auto configuration and what do they do

...he database. update: update the schema. create: creates the schema, destroying previous data. create-drop: drop the schema when the SessionFactory is closed explicitly, typically when the application is stopped. none: does nothing with the schema, makes no changes to the database These options seem...
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Find size of an array in Perl

I seem to have come across several different ways to find the size of an array. What is the difference between these three methods? ...
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How to search in array of object in mongodb

... The right way is: db.users.find({awards: {$elemMatch: {award:'National Medal', year:1975}}}) $elemMatch allows you to match more than one component within the same array element. Without $elemMatch mongo will look for users with National Medal in som...
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How can I determine if a JavaScript variable is defined in a page? [duplicate]

How can i check in JavaScript if a variable is defined in a page? Suppose I want to check if a variable named "x" is defined in a page, if I do if(x != null) , it gives me an error. ...
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node.js, Error: Cannot find module 'express'

... I got stuck on my very first sample code and need some help to get it running. Before I post this question, I did search on stack overflow, found some similar questions but still could not fix it. ...
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Swift - Split string over multiple lines

How could I split a string over multiple lines such as below? 15 Answers 15 ...
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LPCSTR, LPCTSTR and LPTSTR

... To answer the first part of your question: LPCSTR is a pointer to a const string (LP means Long Pointer) LPCTSTR is a pointer to a const TCHAR string, (TCHAR being either a wide char or char depending on whether UNICODE is defined in your project) LPTSTR is a pointer to a (non-co...
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What are the disadvantages of using persistent connection in PDO

In PDO, a connection can be made persistent using the PDO::ATTR_PERSISTENT attribute. According to the php manual - 8 An...