Foo a o b.
Ruby if then shorthand.
This code is functionally equivalent and perhaps a bit easier to understand.
It s like the no parentheses super shorthand but for any method.
What about using this.
Or if you have a list of user objects.
With an if statement you can check if something is true.
Notice that we use two equal symbols to mean equality.
I often use group by x x and find x x the latter is to find the first item in an array which is true.
I used def foo because that s currently valid ruby code but i m fine with any syntax.
Assuming there s no technical limitation or ambiguities i suggest that the shorthand syntax for symbol s in the context of an array be applied to strings also.
But when you want to check for the opposite not true false.
It makes it easier to write correct forwarding code.
Today christmaseve.
Puts snow do you use these ruby shorthands.
Def foo a o b bar.
If rubyists must be told they have to change their forwarding code.
Jun 2 nd.
The ampersand can be used with an iterator like map and will call to proc on whatever symbol you pass it unless you pass it a block explicitly.
A when statement s expression is separated from code by the reserved word then a newline or a semicolon.
One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.
Puts santa s on his way if today christmaseve if else.
Map is a ruby method that you can use with arrays hashes ranges.
If you don t this right you won t get the expected results.
If i is greater than 10 the if statement itself will evaluate to the string greater than or will evaluate to the string less than or equal to this is the same thing that the ternary operator is doing only the ternary operator is more compact.
Code smells and ruby shorthand.
If today christmaseve puts santa s on his way else puts snow end shorthand.
Thus thus case expr0 when expr1 expr2 stmt1 when expr3 expr4 stmt2 else stmt3 end.
Given an array of strings you could go over every string make every character uppercase.
Def foo bar.
Unpacking ampersand to proc.
You could convert them into a list of their corresponding email addresses phone number or any other attribute defined on the user class.
The main use for map is to transform data.
