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npm install errors with Error: ENOENT, chmod

...looks like NPM is using your .gitignore as a base for the .npmignore file, and thus ignores /lib. If you add a blank .npmignore file into the root of your application, everything should work. [edit] - more info on this behaviour here: https://docs.npmjs.com/misc/developers#keeping-files-out-of-you...
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Does free(ptr) where ptr is NULL corrupt memory?

...believe it's safe to assume free(NULL) is a nop as per instructed by the standard. share | improve this answer | follow | ...
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Sleep for milliseconds

... Note that there is no standard C API for milliseconds, so (on Unix) you will have to settle for usleep, which accepts microseconds: #include <unistd.h> unsigned int microseconds; ... usleep(microseconds); ...
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Mock functions in Go

... function as a parameter, or I would make downloader() a method on a type, and the type can hold the get_page dependency: Method 1: Pass get_page() as a parameter of downloader() type PageGetter func(url string) string func downloader(pageGetterFunc PageGetter) { // ... content := pageGette...
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Difference Between Schema / Database in MySQL

Is there a difference between a schema and a database in MySQL? In SQL Server, a database is a higher level container in relation to a schema. ...
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Typical .gitignore file for an Android app

Just put an Android project under git ( beanstalk ) version control via the command line ( mac terminal ). Next step is to set up exclusions. ...
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How to prevent a click on a '#' link from jumping to top of page?

... In jQuery, when you handle the click event, return false to stop the link from responding the usual way prevent the default action, which is to visit the href attribute, from taking place (per PoweRoy's comment and Erik's answer): $('a.someclass...
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What does PHP keyword 'var' do?

... It's for declaring class member variables in PHP4, and is no longer needed. It will work in PHP5, but will raise an E_STRICT warning in PHP from version 5.0.0 up to version 5.1.2, as of when it was deprecated. Since PHP 5.3, var has been un-deprecated and is a synonym for 'pu...
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Echo newline in Bash prints literal \n

... The OP asked about echo, not printf; and @choroba's answer below, which uses the -e option, fills the bill perfectly. – JESii May 27 '15 at 13:46 ...
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Check if all checkboxes are selected

... answered Apr 4 '11 at 16:34 cbrandolinocbrandolino 5,39722 gold badges1616 silver badges2727 bronze badges ...