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Minimum and maximum value of z-index?

...r>) or real number values (denoted by <number>). Real numbers and integers are specified in decimal notation only. An <integer> consists of one or more digits "0" to "9". A <number> can either be an <integer>, or it can be zero or more digits followed by a ...
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C++ Object Instantiation

I'm a C programmer trying to understand C++. Many tutorials demonstrate object instantiation using a snippet such as: 9 An...
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Jasmine JavaScript Testing - toBe vs toEqual

....g. numbers, booleans, strings, etc.), there is no difference between toBe and toEqual; either one will work for 5, true, or "the cake is a lie". To understand the difference between toBe and toEqual, let's imagine three objects. var a = { bar: 'baz' }, b = { foo: a }, c = { foo: a }; Using...
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How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c

...ory structure where a directory is named for a commit in a Git repository, and you want it to be short enough to make your eyes not bleed, but long enough that the chance of it colliding would be negligible, how much of the SHA substring is generally required? ...
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Adding :default => true to boolean in existing Rails column

... that you would have to create a rake task or just go in the rails console and update all the records (which I would not recommend in production). When you added t.boolean :show_attribute, :default => true to the create_profiles migration, it's expected that it didn't do anything. Only migrations...
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Xcode duplicate line

There is a Duplicate command in the Edit Menu (with a default shortcut of ⌘ D ), but it is (as Halley pointed out) meant for duplication in the Interface Builder part of Xcode. ...
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Do you need to dispose of objects and set them to null?

Do you need to dispose of objects and set them to null, or will the garbage collector clean them up when they go out of scope? ...
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What is the difference between g++ and gcc?

What is the difference between g++ and gcc? Which one of them should be used for general c++ development? 10 Answers ...
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Regular Expressions: Is there an AND operator?

...an use the | (pipe?) to represent OR , but is there a way to represent AND as well? 12 Answers ...
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How to import the class within the same directory or sub directory?

...es are in a subdirectory - put an __init__.py in the subdirectory as well, and then use regular import statements, with dot notation. For each level of directory, you need to add to the import path. bin/ main.py classes/ user.py dir.py So if the directory was named "class...