How do you read a lambda expression?

How do you read a lambda expression?

• Db88Master

  personally, i love the lambda expression additions.

  in school, i used SML most of the time, and it was an amazing language.

  i know lamba expressions are probably a little foreign for a lot of programmers,

  but the power of being able to inline functions creates many possibilities for streamlined implementations.

  give it a chance, and then you probably will wonder where they have been your whole life.

   

  
  
  

• AE-Sol

  I've always read it as 'in which':

  "c in which Age is less than 50"

  etc.

  
  
  

• Rookie

  I think how a lambda expression is read depends on the context in which it is used.  For example,

  In numbers.Where(num => num < 5), the lambda expression is a predicate, so the lambda can naturally be read as "num where num is less than 5".

  In numbers.Select((num, index) => new {Num = num, InPlace = (num == index)}), the lambda expression is a projection selector, so I would read it as "num, index, selecting Num as num, InPlace as num equals index".

  Verbalizing out of context is a little more arcane, but the fact that the lambda expression is really an anonymous method means it makes sense to vocalize the function call and say something like:
  "num, calling num less than 5"
  "num, index, calling new Num equals num, InPlace as num equals index"

  -Mathew

  
  
  

• Duncan Woods

  so maybe read it like

  "i lambda returns true when i mod 2 is equal to 0"

  Cheers,

  Clint

  
  
  

• Eagle 101

  I would read it like:

  i => (i %2) == 0: returns true when i is even

  c => c.Age < 50 : returns true when c's age is below "way too old"

  
  
  

• Boise83716

  I think they are fantastic as well since they make the code more visually readable but I am still trying to figure out if there is an official way to read it out loud.

  Cheers,

  Clint

  
  
  
• How do you read a lambda expression?