구문
인수
설명
name1
(필수) 할당할 이름. 문자로 시작해야 합니다. 수식의 결과일 수 없고 범위 구문과 충돌할 수 없습니다.
name_value1
(필수) name1에 할당되는 값.
calculationorname2
(필수) 다음 중 하나입니다. LET 함수 내에서 모든 이름을 사용하는 계산. LET 함수의 마지막 인수여야 합니다.두 번째 namevalue에 할당하는 두 번째 이름. 이름이 지정되면 namevalue2 및 calculationorname3가 필요합니다.
name_value2
(선택 사항) calculationorname2에 할당되는 값.
calculationorname3
(선택 사항) 다음 중 하나입니다. LET 함수 내에서 모든 이름을 사용하는 계산. LET 함수의 마지막 인수는 계산이어야 합니다.세 번째 namevalue에 할당하는 세 번째 이름. 이름이 지정되면 namevalue3 및 calculationorname4가 필요합니다.
사용법 참고 사항
LET 함수를 사용하면 수식 내에서 값을 선언하여 변수에 할당할 수 있어 더 복잡한 수식을 쉽게 쓸 수 있습니다. 변수가 명명되면 변수에 정적 값 또는 계산에 기반한 값을 할당할 수 있습니다. 그러면 수식에서 필요한 횟수만큼 이름으로 변수를 참조할 수 있는 반면에 변수의 값은 한 곳에서만 할당됩니다.
변수는 쌍으로 명명되어 값이 할당됩니다(name1/value1, name2/value2, 등). LET는 이름/값 쌍을 최대 126개까지 처리할 수 있지만 첫 번째 이름/값 쌍만 필요합니다. LET에서 최종 결과를 반환하는 데 사용되는 계산은 이 함수에 대한 마지막 인수로 나타납니다.
이점
향상된 성능
수식에 같은 식을 여러 번 쓰면 Excel에서는 결과를 여러 번 계산했습니다. LET에서는 이름으로 식을 호출할 수 있어 Excel에서 식을 한 번만 계산할 수 있습니다.
손쉬운 읽기 및 컴퍼지션
더 이상 특정 범위/셀 참조가 참조하는 데이터, 계산 결과를 기억하거나 동일한 식을 복사/붙여넣기할 필요가 없습니다. 변수를 선언 및 명명하는 기능을 사용하여 자신 및 수식 사용자에게 의미 있는 컨텍스트를 제공할 수 있습니다.
통과
LET 함수는 통과를 위한 매우 편리한 방법입니다. 로컬 변수는 "하나씩" 작동합니다.
그러나 동적 배열 모드는 spread.options.allowDynamicArray = true;로 여십시오.
import { Component, NgModule, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import GC from '@mescius/spread-sheets';
import '@mescius/spread-sheets-resources-ko';
GC.Spread.Common.CultureManager.culture("ko-kr");
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { SpreadSheetsModule } from '@mescius/spread-sheets-angular';
import './styles.css';
const spreadNS = GC.Spread.Sheets, SheetArea = spreadNS.SheetArea;
@Component({
selector: 'app-component',
templateUrl: 'src/app.component.html'
})
export class AppComponent {
spread: GC.Spread.Sheets.Workbook;
hostStyle = {
width: '100%',
height: '100%',
overflow: 'hidden',
float: 'left'
};
constructor() {}
initSpread($event: any) {
let spread = this.spread = $event.spread;
spread.options.allowDynamicArray = true;
this.initStyles(spread);
spread.setSheetCount(5);
spread.suspendPaint();
spread.suspendCalcService();
this.initSheet1(spread.getSheet(0));
this.initSheet2(spread.getSheet(1));
this.initSheet3(spread.getSheet(2));
this.initSheet4(spread.getSheet(3));
this.initSheet5(spread.getSheet(4));
spread.resumeCalcService();
spread.resumePaint();
}
initStyles(spread: GC.Spread.Sheets.Workbook) {
var introStyle = new GC.Spread.Sheets.Style();
introStyle.name = 'intro';
introStyle.font = 'normal bold 16px Segoe UI';
introStyle.foreColor = "#172b4d";
spread.addNamedStyle(introStyle);
var introSecStyle = new GC.Spread.Sheets.Style();
introSecStyle.name = 'introSec';
introSecStyle.font = 'normal bold 12px Segoe UI';
introSecStyle.foreColor = "#000";
spread.addNamedStyle(introSecStyle);
var introGrayStyle = new GC.Spread.Sheets.Style();
introGrayStyle.name = 'introGray';
introGrayStyle.font = 'normal bold 12px Segoe UI';
introGrayStyle.foreColor = "gray";
spread.addNamedStyle(introGrayStyle);
var introStyle1 = new GC.Spread.Sheets.Style();
introStyle1.name = 'intro1';
introStyle1.font = 'normal bold 14px Calibri';
introStyle1.hAlign = 0;
introStyle1.vAlign = 1;
introStyle1.foreColor = "#172b4d";
spread.addNamedStyle(introStyle1);
var formulaStyle = new GC.Spread.Sheets.Style();
formulaStyle.name = 'formula';
formulaStyle.font = 'normal bold 12px Consolas';
formulaStyle.foreColor = "#c00000";
introStyle1.vAlign = 1;
spread.addNamedStyle(formulaStyle);
var tableHeaderStyle = new GC.Spread.Sheets.Style();
tableHeaderStyle.name = 'tableHeader';
tableHeaderStyle.font = "normal bold 14.7px Calibri";
tableHeaderStyle.hAlign = 1;
tableHeaderStyle.backColor = "#d9e1f2";
spread.addNamedStyle(tableHeaderStyle);
var tableContentStyle = new GC.Spread.Sheets.Style();
tableContentStyle.name = 'tableContent';
tableContentStyle.font = "normal normal 14.7px Calibri";
tableContentStyle.hAlign = 1;
spread.addNamedStyle(tableContentStyle);
var sourceStyle = new GC.Spread.Sheets.Style();
sourceStyle.name = 'source';
sourceStyle.hAlign = 0;
sourceStyle.backColor = "#fce8ce";
spread.addNamedStyle(sourceStyle);
var resultStyle = new GC.Spread.Sheets.Style();
resultStyle.name = 'result';
resultStyle.hAlign = 0;
resultStyle.backColor = "#e2efda";
spread.addNamedStyle(resultStyle);
}
initSheet1 (sheet: GC.Spread.Sheets.Worksheet) {
sheet.name('Use Case');
var table1Source = {
name: 'Support Engineer Employment Length',
data: [
{ engineer: 'Bob', start: new Date(2014,4,25), salary: 2790 },
{ engineer: 'Jim', start: new Date(2019,6,20), salary: 2216 },
{ engineer: 'Kevin', start: new Date(2017,2,1), salary: 2498 },
{ engineer: 'Sarah', start: new Date(2020,6,14), salary: 1989 }
]
};
sheet.addSpan(1, 1, 1, 4);
sheet.setValue(1, 1, table1Source.name);
sheet.getCell(1, 1).hAlign(1).font("normal bold 15px Calibri");
sheet.setColumnWidth(1, 132);
sheet.setColumnWidth(2, 87);
sheet.setColumnWidth(3, 147);
sheet.setColumnWidth(4, 63);
var table1 = sheet.tables.add('Table1', 2, 1, 5, 4);
table1.style(GC.Spread.Sheets.Tables.TableThemes.medium7);
var table1Column1 = new GC.Spread.Sheets.Tables.TableColumn(1, "engineer", "Support Engineer");
var table1Column2 = new GC.Spread.Sheets.Tables.TableColumn(2, "start", "Start Date");
var table1Column3 = new GC.Spread.Sheets.Tables.TableColumn(3, null, "Time with Company");
var table1Column4 = new GC.Spread.Sheets.Tables.TableColumn(4, "salary", "Salary");
table1.autoGenerateColumns(false);
table1.bind([table1Column1, table1Column2, table1Column3, table1Column4], 'data', table1Source);
table1.setColumnDataFormula(2, '=LET(time,(YEAR(TODAY())-YEAR([@[Start Date]])),SWITCH(TRUE,time>5,"5+ years",time>=1,"1-4 years",time=0,"<= 1 Year"))');
var style = new GC.Spread.Sheets.Style();
style.backColor = 'rgb(112,173,71)';
style.foreColor = 'rgb(255,255,255)';
style.font = 'normal bold 14px Calibri';
sheet.setStyle(8, 1, style);
sheet.setValue(8, 1, 'Salary Calculations');
sheet.getCell(8, 2).backColor('rgb(227,239,218)');
sheet.getCell(8, 3).backColor('rgb(227,239,218)');
var lineStyle = GC.Spread.Sheets.LineStyle.dotted;
var lineBorder = new GC.Spread.Sheets.LineBorder('rgb(143,193,104)', lineStyle);
var sheetArea = GC.Spread.Sheets.SheetArea.viewport;
sheet.getRange(8, 1, 1, 3).setBorder(lineBorder, { left: true, right: true, top: true, bottom: true }, sheetArea);
var combo = new GC.Spread.Sheets.CellTypes.ComboBox();
combo.editorValueType(GC.Spread.Sheets.CellTypes.EditorValueType.value);
combo.items([
{ text: 'Min', value: 1 },
{ text: 'Max', value: 2 },
{ text: 'Average', value: 3 }
]);
sheet.setCellType(8, 2, combo, GC.Spread.Sheets.SheetArea.viewport);
sheet.setValue(8, 2, 3);
sheet.setFormula(8, 3, '=LET(data,Table1[Salary],calc,C9,aggregate,CHOOSE(calc,5,4,1),SUBTOTAL(aggregate, data))');
}
initSheet2 (sheet: GC.Spread.Sheets.Worksheet) {
sheet.name('#1');
sheet.setValue(1, 1, 'LET basic usage');
sheet.setStyle(1, 1, 'intro');
// Sample pair varible
var formula = '=LET(x,2,x+3)';
sheet.setValue(3, 1, 'Sample pair varible');
sheet.setStyle(3, 1, 'introSec');
sheet.setValue(4, 1, formula);
sheet.setStyle(4, 1, 'formula');
sheet.setValue(5, 1, 'Result');
sheet.setStyle(5, 1, 'result');
sheet.setFormula(5, 2, formula);
// Multiple pair varibles
var formula = '=LET(x,1,y,2,z,3,x+y+z=x*y*z)';
sheet.setValue(7, 1, 'Multiple pair varibles');
sheet.setStyle(7, 1, 'introSec');
sheet.setValue(8, 1, formula);
sheet.setStyle(8, 1, 'formula');
sheet.setValue(9, 1, 'Result');
sheet.setStyle(9, 1, 'result');
sheet.setFormula(9, 2, formula);
// Invoked formula
var formula = '=LET(x,1,y,2,SUM(x,y))';
sheet.setValue(11, 1, 'Invoked formula');
sheet.setStyle(11, 1, 'introSec');
sheet.setValue(12, 1, formula);
sheet.setStyle(12, 1, 'formula');
sheet.setValue(13, 1, 'Result');
sheet.setStyle(13, 1, 'result');
sheet.setFormula(13, 2, formula);
// Dynamic Array
var formula = '=LET(rows,0,cols,0,OFFSET(C18:E18,rows,cols))';
sheet.setValue(15, 1, 'Dynamic Array');
sheet.setStyle(15, 1, 'introSec');
sheet.setValue(16, 1, formula);
sheet.setStyle(16, 1, 'formula');
sheet.setValue(17, 1, 'Range');
sheet.setStyle(17, 1, 'source');
sheet.setArray(17, 2, [[1,2,3]]);
sheet.setValue(18, 1, 'Result');
sheet.setStyle(18, 1, 'result');
sheet.setFormula(18, 2, formula);
}
initSheet3 (sheet: GC.Spread.Sheets.Worksheet) {
sheet.name('#2');
sheet.setValue(1, 1, 'LET local varible & custom name');
sheet.setStyle(1, 1, 'intro');
sheet.setValue(2, 1, 'This sheet includes a custom name "user" which be assigned "Michael" value');
sheet.setStyle(2, 1, 'introGray');
sheet.addCustomName('user', '="Michael"');
sheet.setValue(3, 1, 'user');
sheet.setStyle(3, 1, 'source');
sheet.setFormula(3, 2, '=user');
// Always use let local varible first
var formula = '=LET(user,"Ivy","The actual user is: "&user)';
sheet.setValue(5, 1, 'Always use let local varible first');
sheet.setStyle(5, 1, 'introSec');
sheet.setValue(6, 1, formula);
sheet.setStyle(6, 1, 'formula');
sheet.setValue(7, 1, 'Result');
sheet.setStyle(7, 1, 'result');
sheet.setFormula(7, 2, formula);
// Use custom name if not avalible local varible
var formula = '=LET(user,user,"The actual user is: "&user)';
sheet.setValue(9, 1, 'Use custom name if not avalible local varible');
sheet.setStyle(9, 1, 'introSec');
sheet.setValue(10, 1, formula);
sheet.setStyle(10, 1, 'formula');
sheet.setValue(11, 1, 'Result');
sheet.setStyle(11, 1, 'result');
sheet.setFormula(11, 2, formula);
}
initSheet4 (sheet: GC.Spread.Sheets.Worksheet) {
sheet.name('#3');
sheet.setValue(1, 1, 'LET nested');
sheet.setStyle(1, 1, 'intro');
// Always use the current scope varible
var formula = '=LET(var,"First scope",LET(var,"Second scope",var))';
sheet.setValue(3, 1, 'Always use the current scope varible');
sheet.setStyle(3, 1, 'introSec');
sheet.setValue(4, 1, formula);
sheet.setStyle(4, 1, 'formula');
sheet.setValue(5, 1, 'Result');
sheet.setStyle(5, 1, 'result');
sheet.setFormula(5, 2, formula);
// Use the top scope varible if not found the avalible varible in current scope
var formula = '=LET(var,"First scope",LET(var,var,var&" [from the second scope]"))';
sheet.setValue(7, 1, 'Use the top scope varible if not found the avalible varible in current scope');
sheet.setStyle(7, 1, 'introSec');
sheet.setValue(8, 1, formula);
sheet.setStyle(8, 1, 'formula');
sheet.setValue(9, 1, 'Result');
sheet.setStyle(9, 1, 'result');
sheet.setFormula(9, 2, formula);
}
initSheet5 (sheet: GC.Spread.Sheets.Worksheet) {
sheet.name('#4');
sheet.setValue(1, 1, 'LET simplify the complex formula');
sheet.setStyle(1, 1, 'intro');
// Filter the data to show one person
var formula = '=LET(filterCriteria,H7,filteredRange,FILTER(B7:E13,B7:B13=filterCriteria),IF(ISBLANK(filteredRange),"-",filteredRange))';
sheet.setValue(3, 1, 'Filter the data to show one person');
sheet.setStyle(3, 1, 'introSec');
sheet.setValue(4, 1, formula);
sheet.setStyle(4, 1, 'formula');
var data = [
["Rep", "Region", "Product", "Profit"],
["Amy", "East", "Apple", 1.33 ],
["Fred", "South", "Banana", 0.09],
["Amy", "West", "Mango", 1.85],
["Fred", "North", null, 0.82],
["Fred", "West", "Banana", 1.25],
["Amy", "East", "Apple", 0.72],
["Fred", "North", "Mango", 0.54]
];
sheet.setStyle(5, 1, 'tableHeader');
sheet.setStyle(5, 2, 'tableHeader');
sheet.setStyle(5, 3, 'tableHeader');
sheet.setStyle(5, 4, 'tableHeader');
sheet.setArray(5, 1, data);
sheet.setValue(6, 6, 'Rep');
sheet.setStyle(6, 6, 'source');
sheet.setValue(7, 6, 'Result');
sheet.setStyle(7, 6, 'result');
sheet.setValue(6, 7, 'Fred');
sheet.setFormula(7, 7, formula);
// Generate all dates between May 1, 2020 and May 15, 2020
sheet.setColumnWidth(2, 72);
sheet.setColumnWidth(7, 72);
var formula = '=LET(dates,SEQUENCE(C19-C18+1,1,C18,1),FILTER(dates,WEEKDAY(dates,2)<6))';
var formatter = '[$-en-US]dd-mmm-yy;@';
sheet.setValue(15, 1, 'Generate all dates between May 1, 2020 and May 15, 2020');
sheet.setStyle(15, 1, 'introSec');
sheet.setValue(16, 1, formula);
sheet.setStyle(16, 1, 'formula');
sheet.setValue(17, 1, 'Start');
sheet.setStyle(17, 1, 'tableHeader');
sheet.setValue(18, 1, 'End');
sheet.setStyle(18, 1, 'tableHeader');
sheet.setValue(17, 2, new Date(2020, 4, 1));
sheet.setValue(18, 2, new Date(2020, 4, 15));
sheet.setFormatter(17, 2, formatter);
sheet.setFormatter(18, 2, formatter);
sheet.setValue(17, 6, 'Result');
sheet.setStyle(17, 6, 'result');
sheet.setFormula(17, 7, formula);
for (var i = 0; i < 11; i ++) {
sheet.setFormatter(i + 17, 7, formatter);
}
}
}
@NgModule({
imports: [BrowserModule, SpreadSheetsModule, FormsModule],
declarations: [AppComponent],
exports: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule {}
enableProdMode();
// Bootstrap application with hash style navigation and global services.
platformBrowserDynamic().bootstrapModule(AppModule);
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css" href="$DEMOROOT$/ko/angular/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<!-- Polyfills -->
<script src="$DEMOROOT$/ko/angular/node_modules/core-js/client/shim.min.js"></script>
<script src="$DEMOROOT$/ko/angular/node_modules/zone.js/fesm2015/zone.min.js"></script>
<!-- SystemJS -->
<script src="$DEMOROOT$/ko/angular/node_modules/systemjs/dist/system.js"></script>
<script src="systemjs.config.js"></script>
<script>
// workaround to load 'rxjs/operators' from the rxjs bundle
System.import('rxjs').then(function (m) {
System.import('@angular/compiler');
System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators));
System.import('$DEMOROOT$/ko/lib/angular/license.ts');
System.import('./src/app.component');
});
</script>
</head>
<body>
<app-component></app-component>
</body>
</html>
<div class="sample-tutorial">
<gc-spread-sheets [hostStyle]="hostStyle" (workbookInitialized)="initSpread($event)">
<gc-worksheet>
</gc-worksheet>
</gc-spread-sheets>
</div>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
.options-container {
float: right;
width: 280px;
padding: 12px;
height: 100%;
box-sizing: border-box;
background: #fbfbfb;
overflow: auto;
}
.options-row {
font-size: 14px;
padding: 5px;
margin-top: 10px;
}
input {
padding: 4px 6px;
display: inline-block;
}
input[type="text"] {
width: 200px;
}
label {
display: block;
margin-bottom: 6px;
}
input[type=button] {
margin-top: 6px;
display: block;
width:216px;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
(function (global) {
System.config({
transpiler: 'ts',
typescriptOptions: {
tsconfig: true
},
meta: {
'typescript': {
"exports": "ts"
},
'*.css': { loader: 'css' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
'core-js': 'npm:core-js/client/shim.min.js',
'zone': 'npm:zone.js/fesm2015/zone.min.js',
'rxjs': 'npm:rxjs/dist/bundles/rxjs.umd.min.js',
'@angular/core': 'npm:@angular/core/fesm2022',
'@angular/common': 'npm:@angular/common/fesm2022/common.mjs',
'@angular/compiler': 'npm:@angular/compiler/fesm2022/compiler.mjs',
'@angular/platform-browser': 'npm:@angular/platform-browser/fesm2022/platform-browser.mjs',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/fesm2022/platform-browser-dynamic.mjs',
'@angular/common/http': 'npm:@angular/common/fesm2022/http.mjs',
'@angular/router': 'npm:@angular/router/fesm2022/router.mjs',
'@angular/forms': 'npm:@angular/forms/fesm2022/forms.mjs',
'jszip': 'npm:jszip/dist/jszip.min.js',
'typescript': 'npm:typescript/lib/typescript.js',
'ts': './plugin.js',
'tslib':'npm:tslib/tslib.js',
'css': 'npm:systemjs-plugin-css/css.js',
'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js',
'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js',
'@mescius/spread-sheets': 'npm:@mescius/spread-sheets/index.js',
'@mescius/spread-sheets-resources-ko': 'npm:@mescius/spread-sheets-resources-ko/index.js',
'@mescius/spread-sheets-angular': 'npm:@mescius/spread-sheets-angular/fesm2020/mescius-spread-sheets-angular.mjs',
'@grapecity/jsob-test-dependency-package/react-components': 'npm:@grapecity/jsob-test-dependency-package/react-components/index.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'ts'
},
rxjs: {
defaultExtension: 'js'
},
"node_modules": {
defaultExtension: 'js'
},
"node_modules/@angular": {
defaultExtension: 'mjs'
},
"@mescius/spread-sheets-angular": {
defaultExtension: 'mjs'
},
'@angular/core': {
defaultExtension: 'mjs',
main: 'core.mjs'
}
}
});
})(this);
