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How do I run a Ruby file in a Rails environment?
I want to run a Ruby file in the context of a Rails environment.
rails runner almost does what I want to do, but I'd like to just give it the file name and arguments. I'm pretty sure this is possible since I've done it before. Can someone remind me how to do this?
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How can I list (ls) the 5 last modified files in a directory?
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Try using head or tail. If you want the 5 most-recently modified files:
ls -1t | head -5
The -1 (that's a one) says one file per line and the head says take the first 5 entries.
If you want the last 5 try
ls -1t | tail -5
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Ruby Arrays: select(), collect(), and map()
The syntax for mapping:
3 Answers
3
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Range references instead values
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The short & direct answer: no, use the array index instead of the value
So the above code becomes:
package main
import "fmt"
type MyType struct {
field string
}
func main() {
var array [10]MyType
for idx, _ := range array {
array[idx].field = "...
What is the difference between gsub and sub methods for Ruby Strings
I have been perusing the documentation for String today, and I saw the :sub method, which I'd never noticed before. I've been using :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!
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Convert list to tuple in Python
I'm trying to convert a list to a tuple.
6 Answers
6
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Disabling highlighting of current line in the Visual Studio editor
The Visual Studio editor highlights the current line by changing the background color of the current line. Is there a simple way to disable this highlighting? Otherwise, which parameter in Fonts and Colors dialog controls the background color of the currently selected line in the editor?
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How do I get the current Date/time in DD/MM/YYYY HH:MM format?
How can I get the current date and time in DD/MM/YYYY HH:MM format and also increment the month?
4 Answers
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Check if any ancestor has a class using jQuery
Is there any way in jQuery to check if any parent, grand-parent, great-grand-parent has a class.
3 Answers
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Difference between solr and lucene
... Lucene has no clue about the Solr API.
2) Lucene is a powerful search engine framework that lets us add search capability to our application. It exposes an easy-to-use API while hiding all the search-related complex operations. Any application can use this library, not just Solr.
3) Solr is built...