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Can not connect to local PostgreSQL
... system, they all contain conf.sample files (pg_hba, pg_ident, pg_service, etc) but no .conf files. This should not be the case, correct? Also the directory that should contain .s.PGSQL.5432 is empty. Instead I have a file located at /private/tmp/.s.PGSQL.5432.lock. PS returns postgres processes so ...
How can I get nth element from a list?
...hat the standard library contains some such partial functions (head, last, etc.). For safety, use an option type Maybe, or the Safe module.
Example of a reasonably efficient, robust total (for indices ≥ 0) indexing function:
data Maybe a = Nothing | Just a
lookup :: Int -> [a] -> Maybe a
...
How does collections.defaultdict work?
...interesting when the values in a dictionary are collections (lists, dicts, etc.) In this case, the value (an empty list or dict) must be initialized the first time a given key is used. While this is relatively easy to do manually, the defaultdict type automates and simplifies these kinds of operatio...
Make sure only a single instance of a program is running
... me to notify the running instance, so it creates another window, pops up, etc.
– WhyNotHugo
Jun 17 '11 at 3:16
1
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Python memory usage of numpy arrays
...ngling' numpy.ndarray's, in particular the ones that are stored in _1, _2, etc that were never really meant to stay alive.
I use this code to get a listing of all of them and their size.
Not sure if locals() or globals() is better here.
import sys
import numpy
from humanize import naturalsize
...
How to use ng-repeat without an html element
...he simply wanted to generate an open-tag, then a close tag somewhere else, etc.. just like in the good old days when we would concat our html from strings.. right? no.
as for flattening the structure into a list, here's another solution:
// assume the following structure
var structure = [
{
...
Pythonic way to find maximum value and its index in a list?
...function lambda x: a[x], which says that 0 is actually 2, 1 is actually 9, etc.
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Relation between CommonJS, AMD and RequireJS?
...sically, CommonJS specifies that you need to have a require() function to fetch dependencies, an exports variable to export module contents and a module identifier (which describes the location of the module in question in relation to this module) that is used to require the dependencies (source). C...
Download a file from NodeJS Server using Express
...
For static files like pdfs, Word docs, etc. just use Express's static function in your config:
// Express config
var app = express().configure(function () {
this.use('/public', express.static('public')); // <-- This right here
});
And then just put all y...
How to “properly” create a custom object in JavaScript?
...n larger code bases as developers forget to use new, forget to capitalize, etc. To be pragmatic, you can do everything you need to do without the new keyword - so why use it and introduce more points of failure in the code? JS is a prototypal, not class based, language. So why do we want it to act l...