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R script line numbers at error?
...e failure. I am currently running R version 3.4.1.
Below, I've included a description of the workflow that worked for me, as well as some code I used to set the global error handling option in R.
As I have it configured, the error handling also creates an RData file containing all objects in worki...
Why does the 260 character path length limit exist in Windows?
...directories).
The INT 0x21 AH=0x47 says “This function returns the path description without the drive letter and the initial backslash.” So we see that the system stores the CWD as a pair (drive, path) and you ask for the path by specifying the drive (1=A, 2=B, …), if you specify a 0 then it ...
Why do some functions have underscores “__” before and after the function name?
...
From the Python PEP 8 -- Style Guide for Python Code:
Descriptive: Naming Styles
The following special forms using leading or trailing underscores are
recognized (these can generally be combined with any case convention):
_single_leading_underscore: weak "internal...
Difference between a theta join, equijoin and natural join
...bly joined tables in the system. Take very common columns such as "name", "description", ... Using "natural join" will make them joined whereas it makes nonsense and more is against business logic and leads to error. So yes, "natural join" is dangerous. It forces you to have distinct names except fo...
Why do you need to create a cursor when querying a sqlite database?
...for that matter), and this just completely stumps me. The abundant lack of descriptions of cursor objects (rather, their necessity) also seems odd.
...
Accessing private member variables from prototype-defined functions
...short, you can use the new Symbol to create private fields.
Here's a great description: https://curiosity-driven.org/private-properties-in-javascript
Example:
var Person = (function() {
// Only Person can access nameSymbol
var nameSymbol = Symbol('name');
function Person(name) {
...
How to create default value for function argument in Clojure
...he default function a different name (decimal, hex, etc) which may be more descriptive and/or a different scope (var, local). The partial function can also be mixed with some of the approaches above if desired:
(defn string->integer
([s] (string->integer s 10))
([base s] (Integer/parseIn...
API Keys vs HTTP Authentication vs OAuth in a RESTful API
...n resources based on the caller of the API, then use oAuth.
Here's a good description: http://www.srimax.com/index.php/do-you-need-api-keys-api-identity-vs-authorization/
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How do I Sort a Multidimensional Array in PHP [duplicate]
...nd well to sorting. The "birthday" column in the sample data set fits this description: it does not make sense to compare birthdays as strings (because e.g. "01/01/1980" comes before "10/10/1970"). In this case we want to specify how to project the actual data to a form that can be compared directly...
What does principal end of an association means in 1:1 relationship in Entity framework
...is kind of ironic. In this case, Principal is Bar. WithOptionalDependent() description on msdn makes it more clear.
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