concat
concat, process
def process concat(a: text): text
The process returns the resulting concatenation of the text values. It requires an ordering option, either sort or scan.
Examples
table T = with
[| as A, as B |]
[| "hello ", "a" |]
[| "hello ", "a" |]
[| "hello ", "b" |]
[| "world", "b" |]
[| "world", "c" |]
table G[gdim] = by T.B
where T.B != "c"
show table "" a1b4 with
gdim
concat(T.A) sort T.A
group by gdim
Remarks
The ordering option can be applied to any ordered data type.
Beware, text values are limited to 256 characters in Envision.
It would also be possible to re-implement concat with a user-defined process:
def process myConcat(a : text) with
keep c = ""
if c == ""
c = a
else
c = "\{c}\{a}"
return c
See also
- join.
concat, pure function (variadic)
def const pure concat(...t: _typ): text
Returns the concatenation of all the values - of any data types - passed as argument. The function is variadic.
Examples
show summary "" a1d3 with
concat("0", 1, "2", 3) // returns "0123"
concat("Hello", " ") // returns "Hello "
concat("Hello", " ", "World") // returns "Hello World"
concat("Hello", " ", "World", "!") // returns "Hello World!"
All the input values, if not text values already, are converted to text using the text function.
This function is similar to the CONCAT Excel function.