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C# version of java's synchronized keyword?
...s allows more granular usage, and allows use of Monitor.Wait/Monitor.Pulse etc to communicate between threads.
A related blog entry (later revisited).
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Explaining Apache ZooKeeper
...e-light, meaning that mechanisms such as leader election, locks, barriers, etc. are not already present, but can be written above the ZooKeeper primitives.
If the C/Java API is too unwieldy for your purposes, you should rely on libraries built on ZooKeeper such as cages and especially curator.
Whe...
What exactly do the Vagrant commands do?
...more complete list:
box manages boxes: installation, removal, etc.
connect connect to a remotely shared Vagrant environment
destroy stops and deletes all traces of the vagrant machine
docker-logs outputs the logs from the Docker container
docker-run run a one-of...
iOS Tests/Specs TDD/BDD and Integration & Acceptance Testing
...er if the specified item can't be shipped by the selected shipping method; etc. As these possible conditions intersect with one another you end up with a geometrically increasing number of possible contexts; in xUnit-style testing this often leads to a lot of methods with names like testAddItemWhen...
Where does the “flatmap that s***” idiomatic expression in Scala come from?
...operation shared by, for example, containers (such as Option, collections, etc), continuations, state, etc. Second, while you can de-construct an Option, that, as opposed to flatMap, is not a monadic operation, so it cannot be as widely applied. Also, it requires too much knowledge about the data yo...
How do I check for a network connection?
... continue;
// this allow to filter modems, serial, etc.
// I use 10000000 as a minimum speed for most cases
if (ni.Speed < minimumSpeed)
continue;
// discard virtual cards (virtual box, virtual pc, etc.)
if (...
Why would I want stage before committing in Git?
...ake changes to these files
git add File3 File4
# Verify changes, run tests etc..
git commit -m 'Correct typos'
git push
In a nutshell, git add and git commit lets you break down a change to the main repository into systematic logical sub-changes. As other answers and comments have pointed out, the...
Android Log.v(), Log.d(), Log.i(), Log.w(), Log.e() - When to use each one?
...ine what is considered a debug log versus informational, versus and error, etc. etc.
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Using git repository as a database backend
... terms of normal ORMs, such as ActiveRecord, Hibernate, DataMapper, Tower, etc.
As much as I've searched for, there's zero existing free codebase for doing that approach to git from popular frameworks.
There is at least one service that somehow manages to do that efficiently — that is obviously gi...
Why do we need the “event” keyword while defining events?
...yone can remove other people's event handlers, raise the event themselves, etc - it's an encapsulation disaster.
For more on events (and delegates) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still co...