My latest utility function: To insert commas into a number (how many of us
already have one of these?). It uses my version of 'rejoin, which is
enhanced with the /with refinement (how many of us have already done
this?). Currently only works with integers.
If the use of commas offends you (for non-USA people) substitute the
character appropriate to your country.
; ----------------------------------------------------------------------
comma-ize: function [
"Insert commas into a number"
some-num [string! integer!]
][digit b str here there][
digit: charset "1234567890" b: make block! 10
reverse str: to-string some-num
parse str [any [here: 1 3 digit there: (append b copy/part :here
:there)]]
head reverse str: rejoin/with b #","
]
; ----------------------------------------------------------------------
rejoin: func [
"Reduces and joins a block of values - allows /with refinement."
block [block!] "Values to reduce and join"
/with
join-thing "Value to place in between each element"
][
block: reduce block
if with [
while [not tail? block: next block][insert block join-thing block:
next block]
block: head block
]
append
either series? first block [copy first block] [form first block]
next block
]
; ----------------------------------------------------------------------
>> comma-ize 12345678
== "12,345,678"
- Michael Jelinek
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