The document contains code snippets in different programming languages like Java, JavaScript, C#, F# demonstrating basic programming concepts like variables, loops, conditionals, exceptions handling.

1. para desenvolvedores
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4. String name = "John";
Java

5. var name = "John";
name.length // 4
javascript

6. List<string> names = new List<string>();
names.Add("John");
names.Add("Jane");
foreach (string name in names)
{
if (name.StartsWith("J")) {
Console.WriteLine(name);
}
}
C#

7. let names = ["John"; "Jane"];;
names
|> List.filter(String.StartsWith("J"))
|> List.iter(Console.WriteLine);;
F#

9. switch (number)
{
case 1:
doStuff();
case 2:
doMoreStuff();
break;
}
C?

12. switch (number)
{
case 1:
doStuff();
case 2:
doMoreStuff();
break;
}
C?

13. switch (number)
{
case 1:
doStuff();
// falling thru
case 2:
doMoreStuff();
break;
}
C?

14. try {
return true;
} finally {
return false;
}
Java

16. switch (number)
{
case 1:
x = doStuff();
case 2:
x = doMoreStuff();
break;
}

17. switch (number)
{
case 1:
this.x = doStuff();
case 2:
this.x = doMoreStuff();
break;
}