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Explanation of JSONB introduced by PostgreSQL
PostgreSQL just introduced JSONB and it's already trending on hacker news . It would be great if someone could explain how it's different from Hstore and JSON previously present in PostgreSQL. What are its advantages and limitations and when should someone consider using it?
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What is the difference between JSF, Servlet and JSP?
...a Java view technology running on the server machine which allows you to write template text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-known taglib is JST...
How to keep the console window open in Visual C++?
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Start the project with Ctrl+F5 instead of just F5.
The console window will now stay open with the Press any key to continue . . . message after the program exits.
Note that this requires the Console (/SUBSYSTEM:CONSOLE) linker option, which y...
How to get the function name from within that function?
...Function.caller and arguments.callee are both forbidden in strict mode.
Edit: nus's regex based answer below achieves the same thing, but has better performance!
In ES6, you can just use myFunction.name.
Note: Beware that some JS minifiers might throw away function names, to compress better; you ...
Add a default value to a column through a migration
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Here's how you should do it:
change_column :users, :admin, :boolean, :default => false
But some databases, like PostgreSQL, will not update the field for rows previously created, so make sure you update the field manaully on the migration too.
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Do I need dependency injection in NodeJS, or how to deal with …?
I currently creating some experimental projects with nodejs. I have programmed a lot Java EE web applications with Spring and appreciated the ease of dependency injection there.
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What's the difference between git reflog and log?
The man page says that log shows the commit logs and reflog manages reflog information. What exactly is reflog information and what does it have that the log doesn't? The log seems far more detailed.
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Create instance of generic type in Java?
Is it possible to create an instance of a generic type in Java? I'm thinking based on what I've seen that the answer is no ( due to type erasure ), but I'd be interested if anyone can see something I'm missing:
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How can a Javascript object refer to values in itself? [duplicate]
...bute to a function. I mean something like this:
var obj = {
key1: "it ",
key2: function() {
return this.key1 + " works!";
}
};
alert(obj.key2());
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input type=“text” vs input type=“search” in HTML5
I'm new to HTML5 as begun to work with HTML5's new form input fields. When I'm working with form input fields, especially <input type="text" /> and <input type="search" /> IMO there wasn't any difference in all major browser including Safari, Chrome, Firefox and Opera. And the search...