Is it good practice to explicitly declare local or global variables all the time?

[thankyou18]

Is it a good coding practice in Amibroker to always explicitly declare local/global variables?

In other words, write this at the top of every formula.
SetOption("RequireDeclarations", True );

https://www.amibroker.com/guide/keyword/local.html

What is the opinion of the experts here? Are there situations when not requiring declarations is preferable?

[Milosz]

@thankyou18 there was a discussion regarding this topic in these threads:

Dynamic Variables to solve Highest and Lowest Moving average in a group of averages

Yes if variables apprear first in the function definition they are automatically treated as local, but @fxshrat uses good programming practice of explicit local declaration so regardless if your code is using same identifiers for globals or not it will work correctly in call cases.

Global vs local keyword

Hi I like to declare the global variables at the top of the file, using the keyword global. I experimented by replacing the keyword global with local. Nothing changed, the script continued to work the same way. My question is: Does something change and I am missing it (by using local instead of global)? PS: In my files I like to use this statement, which forces me to declare all variables: SetOption( "RequireDeclarations", True ); I have read this: https://www.amibroker.com/guide/keywor…