Top "Block" questions

How to see if a pipe is empty

Assuming a pipe, int pipe_fd[2]; pipe(pipe_fd); We fork, and expect that one process will write into the …

c block pipe blocking

PostgreSQL: invalid page header in block

I'm getting an Error ERROR: invalid page header in block 411 of relation "t_value_time" in my PostgreSQL database. This …

postgresql block

Best explanation of Ruby blocks?

What is the best explanation for Ruby blocks that you can share? Both usage and writing code that can take …

ruby block

Difference Between 'display: block; float: left' vs. 'display: inline-block; float: left'?

Is there a practical difference between whether a left-floated element (say, and image) has display: inline-block; applied to it, as …

html css-float block css

How to use NSURLConnection completionHandler with swift

Does anybody know how handlers (blocks) work in swift? I am trying to get this code running but i can't …

block nsurlconnection swift

Change the context/binding inside a block in ruby

I have a DSL in Ruby that works like so: desc 'list all todos' command :list do |c| c.desc …

ruby metaprogramming block

Loop & output content_tags within content_tag in helper

I'm trying a helper method that will output a list of items, to be called like so: foo_list( ['item_…

ruby-on-rails ruby-on-rails-3 helper block

What does to_proc method mean?

I am learning rails and following this thread. I am stuck with the to_proc method. I consider symbols only …

ruby syntax block symbols proc

Django - "Include" a block in several templates? Template tag? Something else?

I have a little statistics block that I want to be available in several places: the profile page of a …

django block django-templates

block syntax difference causes "LocalJumpError: no block given (yield)"

Saw a strange case come up, trying to figure out what is happening here: > def test > p yield &…

ruby block