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What does the exclamation mark do before the function?
...ation. You would need an invocation, foo(), to actually run the function.
Now, when we add the seemingly innocuous exclamation mark: !function foo() {} it turns it into an expression. It is now a function expression.
The ! alone doesn't invoke the function, of course, but we can now put () at the ...
What is an invariant?
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It is a condition you know to always be true at a particular place in your logic and can check for when debugging to work out what has gone wrong.
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How do I define global variables in CoffeeScript?
...#L321 ), so in Node.js what you would need to do is exports.foo = 'baz';.
Now let us take a look at what it states in your quote from the docs:
...targeting both CommonJS and the browser: root = exports ? this
This is obviously coffee-script, so let's take a look into what this actually com...
Understanding what 'type' keyword does in Scala
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Type aliases are often used to keep the rest of the code simple: you can now write
def doSomeThing(f: FunctorType)
which will be interpreted by the compiler as
def doSomeThing(f: (LocalDate, HolidayCalendar, Int, Boolean) => LocalDate)
This helps to avoid defining many custom types that a...
Calculate difference between two datetimes in MySQL
...rence between the last login time and the current time (which I get using NOW() ).
3 Answers
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Is there a way to automatically build the package.json file for Node.js projects
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seem it don't create package.json now. win7x64 node0.10.9
– atian25
Jun 24 '13 at 2:51
33
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Difference between timestamps with/without time zone in PostgreSQL
...ly in the docs. The difference arises from what the system can reasonably know about the value:
With a time zone as part of the value, the value can be rendered as a local time in the client.
Without a time zone as part of the value, the obvious default time zone is UTC, so it is rendered for that...
Angular JS: What is the need of the directive’s link function when we already had directive’s contro
... link and controller functions and reading quite a lot about them, I think now I have the answer.
First lets understand,
How do angular directives work in a nutshell:
We begin with a template (as a string or loaded to a string)
var templateString = '<div my-directive>{{5 + 10}}</div>...
MongoDB or CouchDB - fit for production? [closed]
...ction.
businessinsider has been using mongo in production for over a year now. They are using it for everything from users and blog posts, to every image on the site.
shopwiki is using it for a few things including real time analytics and a caching layer. They are doing over 1000 writes per secon...
How to install the current version of Go in Ubuntu Precise
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This is annoying now that you have to bootstrap 1.5+ with a 1.4+ build.
– jocull
Jan 2 '16 at 17:17
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