Exceptions

Exceptions are a feature.

In general, an exception breaks the normal flow of execution and executes a pre-registered exception handler.

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Languages with Exceptions include Java, JavaScript, C++, PHP, C#, Ruby, Swift, Scala, Kotlin, PowerShell, Elixir, Dart, Solidity, CoffeeScript, Groovy, ABAP, REBOL, X10, Apex, Boron, Sophia

Example from JavaScript:

try {
 undefinedFn()
} catch (err) {
 console.log(err)
}

Example from Ruby:

def hello
 puts "Hello, World!"
   # start an exception handler
   begin
       raise "This is an exception"
   rescue => e
       puts "Exception caught: #{e}"
   end
 end
hello

Example from Elixir:

raise "oops, something went wrong"

Example from REBOL:

catch [throw 22 print "You'll never see this."]

try/except [read %does_not_exist] [print "File not found"]

Example from Boron:

catch [throw 22 print "You'll never see this."]

if error? try [read %does_not_exist] [print "File not found"]

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