meineerde/holgerjust.de
1
0
Fork 0
mirror of https://github.com/meineerde/holgerjust.de.git synced 2025-10-17 17:01:01 +00:00
Code Issues Releases Activity

Ruby default arguments article: Typo, Formatting

Browse Source
This commit is contained in:
Holger Just 2017-01-02 19:32:38 +01:00
parent 494a6fd885
commit a0a0cf8cae
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
source/articles/2016/detecting-default-arguments-in-ruby.html.md
View File

@ -120,7 +120,7 @@ with_value('foo', 'value')
## Using a Splatted Parameter
A third options is to use a splat parameter in the method's definition. This accepts an unlimited number of optional arguments and provided them to the method body in an array.
A third option is to use a splat parameter in the method's definition. This accepts an unlimited number of optional arguments and provided them to the method body in an array.
```ruby
def with_splat(*args)
@ -139,7 +139,7 @@ def with_splat(*args)
end
```
By inspecting the `args` array, we can test whether we got an `optional` argument or not. If the array is has exactly 1 element, no optional argument was passed. If it has 2 elements, we use the second one as our `optional` value.
By inspecting the `args` array, we can test whether we got an `optional` argument or not. If the array is has exactly 1 element, no `optional` argument was passed. If it has 2 elements, we use the second one as our `optional` value.
This variant more or less resembles what Ruby itself does in its implementation of the [`Hash#fetch`](https://ruby-doc.org/core/Hash.html#method-i-fetch) method. Since the method is implemented in C, arguments are extracted and validated from the `ARGV` array passed to the method which resembles our `args` array.