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What is purpose of the property “private” in package.json?

I'm learning node.js and express, I am wondering what is the property "private" in ./package.json file used for? 1 Answer ...
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Ruby Arrays: select(), collect(), and map()

..., but a Hash. You can also use select here, but the block is given the key and value in this case: irb(main):001:0> h = {:sku=>"507772-B21", :desc=>"HP 1TB 3G SATA 7.2K RPM LFF (3 .", :qty=>"", :qty2=>"1", :price=>"5,204.34 P"} irb(main):002:0> h.select { |key, value| !value.em...
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iOS: Compare two dates

I have a NSDate that I must compare with other two NSDate and I try with NSOrderAscending and NSOrderDescending but if my date is equal at other two dates? ...
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Where does Xcode 4 store Scheme Data?

I'm just starting to use Xcode 4, and I'm trying to find the file in a project where it stores all of a project's Schemes. I figured they would be stored in a file in the xcodeproj directory somewhere, but for the life of me I can't find which one. ...
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android image button

How can i create a button with no text and an image centered horizontally ? I don't want to use an ImageButton because I want to define a different backgound image ...
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What does [ N … M ] mean in C aggregate initializers?

...h> with its actual contents(it defines miscellaneous symbolic constants and types, and declares miscellaneous functions) in the range based construct, which are then further used for initializing the array of pointers. ...
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Can we use join for two different database tables?

...able names. Let's suppose you have two databases on the same server - Db1 and Db2. Db1 has a table called Clients with a column ClientId and Db2 has a table called Messages with a column ClientId (let's leave asside why those tables are in different databases). Now, to perform a join on the above-...
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grep output to show only matching file

...s the option for grep that will allow me only to print the matching file and not the line within a file that matches the criteria? ...
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Redo merge of just a single file

I'm in the middle of a large merge, and I've used git mergetool to resolve all the conflicts, but I have not committed yet, as I wanted to make sure the merge was ok first. ...
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why unaligned apk is needed?

Android gradle produces apk in two binaries: unaligned and aligned. 2 Answers 2 ...