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Running PostgreSQL in memory only
I want to run a small PostgreSQL database which runs in memory only, for each unit test I write. For instance:
8 Answers
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R script line numbers at error?
...e options(error) functionality. Here's a simple example:
options(error = quote({dump.frames(to.file=TRUE); q()}))
You can create as elaborate a script as you want on an error condition, so you should just decide what information you need for debugging.
Otherwise, if there are specific areas you...
Simple argparse example wanted: 1 argument, 3 results
...s "If arg is A, do this, if B do that, if none of the above show help and quit" .
12 Answers
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Using mixins vs components for code reuse in Facebook React
...fields.
Source (gist)
define(function () {
'use strict';
var _ = require('underscore');
var ValidationMixin = {
getInitialState: function () {
return {
errors: []
};
},
componentWillMount: function () {
this.assertValidatorsDefined();
},
ass...
Does Java 8 provide a good way to repeat a value or function?
...
Here's another technique I ran across the other day:
Collections.nCopies(8, 1)
.stream()
.forEach(i -> System.out.println(i));
The Collections.nCopies call creates a List containing n copies of whatever value you provi...
What is the difference between Polymer elements and AngularJS directives?
...
You're not the first to ask this question :) Let me clarify a couple of things before getting to your questions.
Polymer's webcomponents.js is a library that contains several polyfills for various W3C APIs that fall under the Web Components umbrella. These...
How does deriving work in Haskell?
...l can automatically become instances of some typeclasse s (like Show , Eq ) by deriving from them.
3 Answers
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How to convert index of a pandas dataframe into a column?
...his seems rather obvious, but I can't seem to figure out how to convert an index of data frame to a column?
7 Answers
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What columns generally make good indexes?
As a follow up to " What are indexes and how can I use them to optimise queries in my database? " where I am attempting to learn about indexes, what columns are good index candidates? Specifically for an MS SQL database?
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What is an index in SQL?
What is an index in SQL? Can you explain or reference to understand clearly?
11 Answers
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