Description:
Judge whether a data object is a pure sequence or a pure table sequence.
Syntax:
ifpure(x)
Note:
The function judges whether data object x is a pure sequence or a pure table sequence.
Parameter:
|
x |
Any data object, including constant, expression, record, sequence, table sequence and record sequence |
Return value:
Boolean
Example:
Judge whether a data object is pure sequence:
|
|
A |
|
|
1 |
=["a","w","s"] |
A sequence. |
|
2 |
=ifpure(A1) |
Judge whether A1 is a pure sequence or a pure table sequence, and return false. |
|
3 |
=A1.i() |
Convert A1 into a pure sequence. |
|
4 |
=ifpure(A3) |
Return true. |
Judge whether a data object is pure table sequence:
|
|
A |
|
|
1 |
=3.new(~:ID,~*~:Num) |
A table sequence. |
|
2 |
=ifpure(A1) |
Judge whether A1 is a pure sequence or a pure table sequence, and return false. |
|
3 |
=A1.i() |
Convert A1 into a pure table sequence. |
|
4 |
=ifpure(A3) |
Return true. |
Related function: