A.conj()
Description:
Get concatenation of all sequence-type members.
Syntax:
A.conj(x)
Note:
The function concatenates all the sequence-type members in sequence A; compute expression x by loop and then concatenate the results when parameter x is present.
A.conj(x,…) is equivalen to A.(x,…).conj().
Option:
|
@r |
Recursively concatenate members until there aren’t any sequence members |
|
@v |
Return a pure sequence when members of A are pure sequences/pure table sequences |
Parameter:
|
A |
A sequence whose members are sequences |
|
x |
An expression; can be omitted |
Return value:
Sequence
Example:
When members of A are sequences:
|
|
A |
|
|
1 |
=[[1,2,3],[4,5,6]].conj() |
[1,2,3,4,5,6]. |
|
2 |
=[[1,[2,3]],[2,5,6]].conj() |
[1,[2,3],2,5,6]. |
|
3 |
=[[1,2,3],[3],[7]].conj() |
[1,2,3,3,7]. |
|
4 |
=[[1,[2,3]],[2,5,6]].conj@r() |
Use @r option to recursively concatenate members until there isn’t any sequence member and return [1,2,3,2,5,6]. |
|
5 |
=[[1,2,3],[4,5,6]] |
|
|
6 |
=A5.conj(~**2) |
Return [2,4,6,8,10,12]. |
|
7 |
=A5.(~**2).conj() |
Same result as A5. |
When members of A are table sequences or record sequences
|
|
A |
|
|
1 |
=demo.query("select top 4 EID,NAME,GENDER from EMPLOYEE where GENDER = 'M' ") |
|
|
2 |
=demo.query("select top 4 EID,NAME,GENDER from EMPLOYEE where GENDER = 'F' ") |
|
|
3 |
=[A1,A2].conj() |
Compute concatenation of members of [A1,A2] and return result below:
|
|
4 |
=[A1,A2].conj(~.(NAME)) |
Compute concatenation of NAME fields of members of [A1,A2] and return ["Matthew","Ryan","Jacob","Daniel","Rebecca","Ashley","Rachel","Emily"] |
|
5 |
=[A1,A2].(~.(NAME)).conj() |
Same result as A4. |
Return a pure sequence:
|
|
A |
|
|
1 |
=[1,2,3].i() |
Return a pure sequence. |
|
2 |
=[4,5].i() |
Return a pure sequence. |
|
3 |
=[A1,A2].conj@v() |
Use @v option to return a pure sequence. |
|
4 |
=ifpure(A3) |
Judge whether A3 is a pure sequence and return true. |