#parameter-passing

Cobol code! Where’s the eyewash station?

I’m calling into COBOL code from C, and in order to setup the parameters and interpret the results, I have to know a little bit about how variables are declared in COBOL. I got an explanation of a little bit of COBOL syntax today that takes some of the mystery away.

Here’s the equivalent of something like a declaration of compile time constant variables in COBOL, a hierarchical beast something…

How to: jQuery – add additional parameters on submit (NOT ajax)

jQuery – add additional parameters on submit (NOT ajax)

Using jQuery’s ‘submit’ – is there a way to pass additional parameters to a form? I am NOT looking to do this with Ajax – this is normal, refresh-typical form submission.

$('#submit').click(function () { $('#event').submit(function () { data: { form['attendees'] = $('#attendance').sortable('toArray').toString(); }); });

Answer: jQuery – add…

Fixed What does map(&:name) mean in Ruby? #dev #it #asnwer

What does map(&:name) mean in Ruby?

I found this code in a RailsCast:

def tag_names @tag_names || tags.map(&:name).join(' ') end

what does the (&:name) in map(&:name) mean?

Answer: What does map(&:name) mean in Ruby?

It’s shorthand for tags.map { |tag| tag.name }.join(' ')

Answer: What does map(&:name) mean in Ruby?

It’s equivalent to

def tag_names @tag_names || tags.map { |tag| tag.name…

Solution: Is Java "pass-by-reference" or "pass-by-value"? #dev #it #computers

Is Java "pass-by-reference" or "pass-by-value"?

I always thought Java was pass-by-reference; however I’ve seen a couple of blog posts (for example, this blog) that claim it’s not. I don’t think I understand the distinction they’re making.

What is the explanation?

Answer: Is Java "pass-by-reference" or "pass-by-value"?

Java is always pass by value, with no exceptions, ever.

So how is it that…

How to: What does map(&:name) mean in Ruby?

What does map(&:name) mean in Ruby?

I found this code in a RailsCast:

def tag_names @tag_names || tags.map(&:name).join(' ') end

what does the (&:name) in map(&:name) mean?

Answer: What does map(&:name) mean in Ruby?

It’s shorthand for tags.map { |tag| tag.name }.join(' ')

Answer: What does map(&:name) mean in Ruby?

It’s equivalent to

def tag_names @tag_names || tags.map { |tag| tag.name…

Is Java "pass-by-reference" or "pass-by-value"?

I always thought Java was pass-by-reference; however I’ve seen a couple of blog posts (for example, this blog) that claim it’s not. I don’t think I understand the distinction they’re making.

What is the explanation?

Answer: Is Java "pass-by-reference" or "pass-by-value"?

Java is always pass by value, with no exceptions, ever.

So how is it that…