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JavaScript plus sign in front of function expression
I’ve been looking for information about immediately invoked functions, and somewhere I stumbled on this notation:
3 Answe...
How to read a text file into a string variable and strip newlines?
...licitly close the file, that will then be delayed until the garbage collector runs or the program terminates. The 'with' statement usually encapsulates some setup/teardown open/close actions.
– sleeplessnerd
Oct 18 '13 at 13:38
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Openssl is not recognized as an internal or external command
I wish to generate an application signature for my app which will later be integrated with Facebook. In one of Facebook's tutorials, I found this command:
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How can a Java variable be different from itself?
...do the same with Double.NaN.
From JLS §15.21.1. Numerical Equality Operators == and !=:
Floating-point equality testing is performed in accordance with the rules of the IEEE 754 standard:
If either operand is NaN, then the result of == is false but the result of != is true.
Indeed, the test x!=x...
What is the best way to implement constants in Java? [closed]
... VALUE;
where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value;
I highly recommend NOT putting your constants in their own classes or interfaces.
As a side note: Variables that are declared final and are mutable can still be changed; h...
Updating and committing only a file's permissions using git version control
... way to commit the file into git, so that the executable bit will be restored/set on clone / checkout / pull ?
3 An...
What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
... still is).
The reason we used a graph database was that the data being stored by the system and the operations the system was doing with the data were exactly the weak spot of relational databases and were exactly the strong spot of graph databases. The system needed to store collections of object...
What is the difference between Sublime text and Github's Atom [closed]
...ub announced Atom which is very similar to Sublime. Even some keyboard shortcuts like ⌘ + P , ⌘ + Shift + P etc. are same.
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Adding :default => true to boolean in existing Rails column
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change_column is a method of ActiveRecord::Migration, so you can't call it like that in the console.
If you want to add a default value for this column, create a new migration:
rails g migration add_default_value_to_show_attribute
Then in the migration created:
#...
What are the advantages of using a schema-free database like MongoDB compared to a relational databa
I'm used to using relational databases like MySQL or PostgreSQL, and combined with MVC frameworks such as Symfony, RoR or Django, and I think it works great.
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