程序逻辑
本章主要展示有关程序逻辑的代码参考，比如将网格内的数据拼成序列、实现类似switch/case的结构、取得当前循环已进行的次数、继续、跳出外层循环、清除使用过的变量以节省内存、向子程序传递多个参数、子程序返回多个值、成片注释的写法写进多个单元格中、在代码中使用宏等。
将网格内的数据拼成序列
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1 |
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4 |
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=[A1:D1] |
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实现类似 switch/case 的结构
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=80 |
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if A1>=90 |
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> A10="excellent" |
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else if A1>=80 |
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> A10="good" |
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else if A1>=60 |
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> A10="pass" |
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else |
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> A10="fail" |
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10 |
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good |
取得当前循环已进行的次数
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C |
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for |
if #A1==10000 |
break |
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继续、跳出外层循环
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for [3,2,1] |
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for [5,1,3] |
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if A1>B2 |
next A1 |
继续下一个循环 |
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if A1== B2 |
break A1 |
跳出循环 |
清除使用过的变量以节省内存
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A |
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>var1=to(100) |
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=demo.query("select * from EMPLOYEE") |
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… |
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> var1=null,A2=null |
清除var1和A2单元格 |
向子程序传递多个参数
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func |
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多个参数依次排列 |
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=A1 |
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=B1 |
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return B2+B3 |
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=func(A1,11,21) |
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子程序返回多个值
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func |
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return [1,2,3,4] |
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=func(A1) |
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成片注释的写法
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//This is an example about… |
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一到三行都是注释 |
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1. Remark 1… |
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2. Remark 2… |
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=1+3 |
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在代码中使用宏
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[1,2,3,4] |
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func |
return A1.${A2}() |
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func |
return A1.${lower(A3)}() |
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=func(A2,"sum") |
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返回A1.sum() |
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=func(A3,"Avg") |
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返回A1.avg() |
跨网格调用
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A |
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=size.(char(65+rand(26))).concat() |
size是参数，从外部传入 |
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return A1 |
返回A1 |
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=call(“D:/demo.dfx”,5) |
调用demo.dfx子程序，传入参数5 |
并行
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B |
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=demo.query("select * from EMPLOYEE") |
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=A1.group(GENDER) |
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按性别分组 |
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fork A2 |
=A3.select(SALARY>10000) |
并行计算，A3汇总结果 |