src/bookofnim/helloworld/modules/blocks

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blocks

TLDR
links
once blocks

Vars
- alreadyExecuted`gensym2
Lets
- myChar
- sniper

Source Edit

blocks

TLDR

blocks have a () syntax but we skipped it as its not idiomatic nim in this context
new scope introduced after the : symbol, and ends when the indentention returns to previous level
named blocks can be exited specifically with break blockName
like most other things, blocks can be expressions and assigned to a var
see loopIterator.nim for closureScope blocks

links

once blocks

are executed once, the first time they're seen by the compiler

Vars

alreadyExecuted`gensym2 {.global.} = false: Source Edit

Lets

myChar = block: var yourChar = 'a' if contains({'a', 'b', 'c'}, yourChar): echo ["yourChar was found ", yourChar] yourChar: Source Edit
sniper = "scope module": is in the module scope, global to this module Source Edit