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count (non-blank) lines-of-code in bash
... Just habit. I read pipelines from left to right, which means I usually start with cat, then action, action, action, etc. Clearly, the end result is the same.
– Michael Cramer
Sep 24 '08 at 14:06
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Difference between Fact table and Dimension table?
...this out to see an alternative view on the star schema model Inmon vs. Kimball. Kimbal has a good forum you may also want to check out here: Kimball Forum.
Edit: To answer comment about examples for 4NF:
Example for a fact table violating 4NF:
Sales Fact (ID, BranchID, SalesPersonID, ItemID, Am...
When is it appropriate to use C# partial classes?
...es is to make life easier for code generators / designers. Partial classes allow the generator to simply emit the code they need to emit and they do not have to deal with user edits to the file. Users are likewise free to annotate the class with new members by having a second partial class. This pr...
How do you rename a MongoDB database?
... changes to every shard if the DB is sharded, plus the config servers have all the shard metadata in terms of namespaces with their full names.
There would be absolutely no way to do this on a live system.
To do it offline, it would require re-writing every single database file to accommod...
Why can't strings be mutable in Java and .NET?
...ctly one state, the state in which it was created. If you make sure
that all constructors establish class invariants, then it is
guaranteed that these invariants will remain true for all time, with
no effort on your part.
[...]
Immutable objects are inherently thread-safe; they requi...
Ukkonen's suffix tree algorithm in plain English
...thm.
First, a few preliminary statements.
What we are building, is basically like a search trie. So there
is a root node, edges going out of it leading to new nodes, and
further edges going out of those, and so forth
But: Unlike in a search trie, the edge labels are not single
characters. Instead...
Difference between webdriver.Dispose(), .Close() and .Quit()
...ose the browser window that the driver has focus of
webDriver.Quit() - Calls Dispose()
webDriver.Dispose() Closes all browser windows and safely ends the session
The code below will dispose the driver object, ends the session and closes all browsers opened during a test whether the test fa...
Android - get children inside a View?
...
If you not only want to get all direct children but all children's children and so on, you have to do it recursively:
private ArrayList<View> getAllChildren(View v) {
if (!(v instanceof ViewGroup)) {
ArrayList<View> viewArrayLi...
How do I migrate an SVN repository with history to a new Git repository?
I read the Git manual, FAQ, Git - SVN crash course, etc. and they all explain this and that, but nowhere can you find a simple instruction like:
...
When to use RSpec let()?
...sn't use any of the instance variables defined in the hook. This isn't usually a big deal, but if the setup of the instance variable takes a long time, then you're wasting cycles. For the method defined by let, the initialization code only runs if the example calls it.
You can refactor from a loca...