Ruby If Then Shorthand

Jun 2 nd.

Ruby if then shorthand.

Unpacking ampersand to proc. 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. Hi in message re. One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.

Until then keep sniffin out those code smells my friends. Or if you have a list of user objects. Def foo a o b bar. If rubyists must be told they have to change their forwarding code.

But when you want to check for the opposite not true false. Given an array of strings you could go over every string make every character uppercase. 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. The main use for map is to transform data.

You could convert them into a list of their corresponding email addresses phone number or any other attribute defined on the user class. Map is a ruby method that you can use with arrays hashes ranges. Puts santa s on his way if today christmaseve if else. 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.

With an if statement you can check if something is true. Thus thus case expr0 when expr1 expr2 stmt1 when expr3 expr4 stmt2 else stmt3 end. It makes it easier to write correct forwarding code. If you don t this right you won t get the expected results.

This code is functionally equivalent and perhaps a bit easier to understand. Code smells and ruby shorthand. I used def foo because that s currently valid ruby code but i m fine with any syntax. Today christmaseve.

Foo a o b. Def foo bar. If today christmaseve puts santa s on his way else puts snow end shorthand. Puts santa s on his way.

What about using this. A when statement s expression is separated from code by the reserved word then a newline or a semicolon. 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.