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How to structure a express.js application?
...app = module.exports = express.createServer();
bootstrap(app);
This basically means I place all my bootstrapping in a seperate file, then I bootstrap the server.
So what does bootstrap do?
var configure = require("./app-configure.js"),
less = require("./watch-less.js"),
everyauth = requ...
What does [:] mean?
...at they want with the slice.
In the context of:
x = obj[:]
This will call obj.__getitem__ with the slice object passed in. In fact, this is completely equivalent to:
x = obj[slice(None,None,None)]
(although the former is probably more efficient because it doesn't have to look up the slice ...
Access Control Request Headers, is added to header in AJAX request with jQuery
...
Here is an example how to set a request header in a jQuery Ajax call:
$.ajax({
type: "POST",
beforeSend: function(request) {
request.setRequestHeader("Authority", authorizationToken);
},
url: "entities",
data: "json=" + escape(JSON.stringify(createRequestObject)),
process...
How do you manually execute SQL commands in Ruby On Rails using NuoDB
...cords found and if there is none, it will return nil.
This way I can just call it anywhere on the rails application like for example:
records = execute_statement("select * from table")
"execute_statement" can also call NuoDB procedures, functions, and also Database Views.
...
How to get the last N rows of a pandas DataFrame?
...7 c 8
df[-3:]
A B
5 b 6
6 b 7
7 c 8
This is the same as calling df.iloc[-3:], for instance (iloc internally delegates to __getitem__).
As an aside, if you want to find the last N rows for each group, use groupby and GroupBy.tail:
df.groupby('A').tail(2)
A B
1 a 2
2 a ...
How to import an excel file in to a MySQL database
...
There's a simple online tool that can do this called sqlizer.io.
You upload an XLSX file to it, enter a sheet name and cell range, and it will generate a CREATE TABLE statement and a bunch of INSERT statements to import all your data into a MySQL database.
(Disclaim...
Is there a git-merge --dry-run option?
... operation? It says "all conflicts are fixed but you are still merging". Calling git checkout . doesn't revert the files to pre-merge status.
– J-bob
Dec 8 '14 at 16:38
2
...
Does Java casting introduce overhead? Why?
... casting, when you cast from a type to a wider type, which is done automatically and there is no overhead:
String s = "Cast";
Object o = s; // implicit casting
Explicit casting, when you go from a wider type to a more narrow one. For this case, you must explicitly use casting like that:
Object o...
Logging Clientside JavaScript Errors on Server [closed]
...o it (url, browser, etc) and then post it back to the server using an ajax call.
On the server I have a small page which just takes the posted arguments and outputs them to our normal server logging framework.
I would like to open source the code for this (as a jQuery plugin). If anyone is interes...
Folder structure for a Node.js project
...amework like express or mongoose):
/models contains all your ORM models (called Schemas in mongoose)
/views contains your view-templates (using any templating language supported in express)
/public contains all static content (images, style-sheets, client-side JavaScript)
/assets/images contains...