What is the difference between "INNER JOIN" and "OUTER JOIN"?
Also, how do `LEFT OUTER JOIN`, `RIGHT OUTER JOIN`, and `FULL OUTER JOIN` fit in?
- Modified
- 28 Aug at 04:26
Accessing the index in 'for' loops
How do I access the index while iterating over a sequence with a `for` loop? ``` xs = [8, 23, 45] for x in xs: print("item #{} = {}".format(index, x)) ``` Desired output: ``` item #1 = 8 item #2...
How do I make a flat list out of a list of lists?
I have a list of lists like `[[1, 2, 3], [4, 5, 6], [7], [8, 9]]`. How can I flatten it to get `[1, 2, 3, 4, 5, 6, 7, 8, 9]`? --- [python list comprehensions; compressing a list of lists?](https://...
- Modified
- 10 Sep at 09:22
How do I exit Vim?
I am stuck and cannot escape. It says: ``` type :quit<Enter> to quit VIM ``` But when I type that it simply appears in the object body.
Reference Guide: What does this symbol mean in PHP? (PHP Syntax)
### What is this? This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list. ...
How do I squash my last N commits together?
How do I squash my last N commits together into one commit?
- Modified
- 8 Jul at 04:55
How can I horizontally center an element?
How can I horizontally center a `<div>` within another `<div>` using CSS? ``` <div id="outer"> <div id="inner">Foo foo</div> </div> ```
What's the difference between tilde(~) and caret(^) in package.json?
After I upgraded to the latest stable `node` and `npm`, I tried `npm install moment --save`. It saves the entry in the `package.json` with the caret `^` prefix. Previously, it was a tilde `~` prefix. ...
- Modified
- 11 Jan at 07:13
What is the difference between a URI, a URL, and a URN?
What is the difference between a [URL](http://en.wikipedia.org/wiki/Uniform_Resource_Locator), a [URI](http://en.wikipedia.org/wiki/Uniform_Resource_Identifier), and a [URN](http://en.wikipedia.org/wi...
How to pass "Null" (a real surname!) to a SOAP web service in ActionScript 3
We have an employee whose surname is Null. Our employee lookup application is killed when that last name is used as the search term (which happens to be quite often now). The error received (thanks Fi...
- Modified
- 2 Nov at 16:7