Description:
Start a loop.
Syntax:
for x
Note:
The statement starts a loop executing the code block.
Parameter:
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x |
A sequence, an integer, or a logic expression. Loop through the code block against x or to(x), or if x is true. If x is empty, then the loop will be endless. When the parameter is a table sequence, you can use a loop function symbol in the for x code block. |
Example:
x is an integer:
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A |
B |
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1 |
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Save the cumulative total 55 in A1. |
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2 |
for 10 |
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3 |
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>A1=A1+A2 |
Add up integers from 1 to 10.
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x is empty:
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A |
B |
C |
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1 |
=0 |
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5050. |
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2 |
for |
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Loop will be endless if x is empty. When the loop count reaches 100, then break the loop. |
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3 |
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>A1=A1+#A2 |
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4 |
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if #A2==100 |
break |
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x is a Boolean expression:
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A |
B |
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1 |
=15 |
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2 |
for A1>10 |
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If A1 >10, then start a loop through the code block; otherwise, quit the loop. |
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3 |
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>B1=B1+#A2 |
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4 |
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>A1=A1-1 |
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x is a sequence:
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A |
B |
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1 |
=demo.query("select * from EMPLOYEE") |
0 |
Get the oldest age among all Texas employees in B1 after the loop is over. |
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2 |
=A1.select(STATE=="Texas") |
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3 |
for A2 |
=age(A3.BIRTHDAY) |
A3 performs loop over each Texas employee while computing their age. |
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4 |
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>B1=max(B1,B3) |
The oldest age is stored in B1. |
Use a loop function symbol when parameter x is a table sequence:
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A |
B |
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1 |
=to(10) |
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2 |
for A1 |
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A2 executes the loop operation to compute the cumulative sum of members of A1’s sequence and return 55, which is written to cell B1. ~ in B3 is a loop function symbol representing the current member value of the cell A, |
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3 |
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>B1=B1+~ |