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Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...t is not safely published those 4 write operations can be freely reordered by the compiler / JVM.
So from the perspective of the reading thread, it is a legal execution to read x with its new value but y with its default value of 0 for example. By the time you reach the println statement (which by ...
.NET List Concat vs AddRange
...
They have totally different semantics.
AddRange modifies the list by adding the other items to it.
Concat returns a new sequence containing the list and the other items, without modifying the list.
Choose whichever one has the semantics you want.
...
Generating a list of which files changed between hg versions
...
status is what you need.
But, depending what you mean by "between two revisions", you might also consider using the "x::y" (DAG - Directed Acyclic Graph) range.
Given parallel changesets,
1--2---4
\---3
hg status --rev 1:4 would return (1,2,3,4),
i.e. anything between and...
Java Multiple Inheritance
...ing the OP already knew.
However, I want to emphasize, that I suggest to bypass the "multi-inheritance" problem with interfaces and that I don't recommend to use interfaces that represent already a concrete type (such as Bird) but more a behavior (others refer to duck-typing, which is good, too, b...
What exactly is Arel in Rails 3.0?
... anything, it's a replacement for Ambition. Or, you can think of it as a Ruby version of the LINQ standard query operators or Python's SQLAlchemy. (In fact, the author explicitly cites both LINQ and SQLAlchemy as inspirations.)
Or, you can see it as a replacement for named_scopes. In fact, ARel is p...
On delete cascade with doctrine2
...LETE CASCADE. The one-to-many/many-to-one relationship is implemented with by the foreign key in the phone_numbers.
CREATE TABLE contacts
(contact_id BIGINT AUTO_INCREMENT NOT NULL,
name VARCHAR(75) NOT NULL,
PRIMARY KEY(contact_id)) ENGINE = InnoDB;
CREATE TABLE phone_numbers
(phone_id BIGIN...
Forward host port to docker container
Is it possible to have a Docker container access ports opened by the host? Concretely I have MongoDB and RabbitMQ running on the host and I'd like to run a process in a Docker container to listen to the queue and (optionally) write to the database.
...
Get css top value as number not as string?
...o a number, e.g:
parseInt($('#elem').css('top'));
Update: (as suggested by Ben): You should give the radix too:
parseInt($('#elem').css('top'), 10);
Forces it to be parsed as a decimal number, otherwise strings beginning with '0' might be parsed as an octal number (might depend on the browser ...
Go naming conventions for const
...ews of Go code, so
that a single detailed explanation can be referred to by shorthands.
This is a laundry list of common mistakes, not a style guide.
You can view this as a supplement to
http://golang.org/doc/effective_go.html.
Mixed Caps
See http://golang.org/doc/effective_go....
Is there a typical state machine implementation pattern?
... this post is old but I hope I will get my answer :) What certainly should by in instance_data_t variable? I wonder how to change states in interrupts ... is it a good way to store information about processed interrupt in this variable? For example store information that button was pressed so the st...