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Aloha Trailblazers,
In this post, I'm sharing the code snippet for Coding with Confidence: The Fun Way to Learn Salesforce Apex tutorial series part 25 to 30:// * Control Flow statements: Used to control the flow of code execution. You can skip a block of code or have a block of code executed repeatedly. These statements include: if-else (conditional) statements, switch statements and loops
// * if - else / Conditional Statements
if(<Boolean>) {
} else {
}
// * if Statement
Integer num = 10;
System.debug('Start...');
if(num > 50) {
System.debug('num is greater than 50');
}
System.debug('End...');
// * if Statement with else
Integer num = 100;
System.debug('Start...');
if(num > 50) {
System.debug('num is greater than 50');
System.debug('num is greater than 50');
System.debug('num is greater than 50');
} else {
System.debug('num is not greater than 50 and is: ' + num);
System.debug('num is not greater than 50 and is: ' + num);
System.debug('num is not greater than 50 and is: ' + num);
}
System.debug('End...');
// * Repeated if else statements, if else chaining
Integer num = 50;
System.debug('Start...');
if(num > 50) {
System.debug('num is greater than 50');
} else if(num < 50) {
System.debug('num is less than 50');
} else if(num == 50) {
System.debug('num is equal to 50');
} else {
System.debug('num is null');
}
System.debug('End...');
// * nested if else
enum SalesforceRelease {
SPRING,
SUMMER,
WINTER
}
Integer age = 10;
SalesforceRelease currentRelease = SalesforceRelease.WINTER;
if(currentRelease == SalesforceRelease.SPRING) {
if(age >= 18) {
System.debug('Richard will drive a bike.');
} else {
System.debug('Richard will board a bus.');
}
} else if(currentRelease == SalesforceRelease.SUMMER) {
if(age >= 18) {
System.debug('Richard will drive a car.');
} else {
System.debug('Richard will board a metro.');
}
} else if(currentRelease == SalesforceRelease.WINTER) {
if(age >= 18) {
System.debug('Richard will drive a truck.');
} else {
System.debug('Richard will stay home.');
}
}
// * Switch Statements
switch on expression { // * Value can be Integer, Long, sObject, String (case sensitive) or Enum
when value1 {
}
when value2 {
}
when else {
}
}
Integer i = 20;
switch on i {
when 1 {
System.debug('i is 1');
}
when 2 {
System.debug('i is 2');
}
when null {
System.debug('i is null');
}
when else {
System.debug('i is none of these');
}
}
enum SalesforceRelease {
SPRING,
SUMMER,
WINTER,
AUTUMN
}
SalesforceRelease currentRelease = SalesforceRelease.AUTUMN;
switch on currentRelease {
when SPRING, SUMMER {
System.debug('Richard will ride a bike');
}
when WINTER {
System.debug('Richard will drive a car');
}
when null {
System.debug('Richard will do nothing');
}
when else {
System.debug('Richard will stay at home');
}
}
// * Loops
// * While loop
while(condition) {
// * Code
}
Integer i = 100;
while(i<11) {
System.debug('Value of i = ' + i);
i++;
}
Integer i = 1;
while(i<6) { // * Infinite loop
System.debug('Value of i = ' + i);
}
// * Do while loop
do {
// * Code
} while(condition);
Integer i=100;
do {
System.debug('Value of i = ' + i);
i++;
} while(i<11);
List<Integer> numbers = new List<Integer>();
numbers.add(1);
numbers.add(2);
numbers.add(3);
numbers.add(4);
numbers.add(5);
numbers.add(6);
numbers.add(7);
numbers.add(8);
numbers.add(9);
numbers.add(10);
System.debug(numbers);
List<Integer> numbers = new List<Integer>();
Integer i = 1;
while(i<101) {
numbers.add(i);
i++;
}
System.debug(numbers);
System.debug(numbers.size());
// * For Loop
// * Traditional for loop
for(initialization; condition; operation) {
// * Code
}
for(Integer i=1; i<6; i++) {
System.debug('Value of i = ' + i);
}
for(Integer i=1, j=0; i<6; i++) {
System.debug('Value of i = ' + i + ' & j = ' + j);
}
// * List/Set iteration for loop
for(variable : <list or set>) {
// * Code
}
Set<Integer> numbers = new Set<Integer>{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
for(Integer num : numbers) {
if(num==5) {
// break;
continue;
}
System.debug('Current element of set = ' + num);
}
// * Adding/Removing elements while iterating a collection is not allowed
// * Break and Continue keywords
Learn Apex Control Flow Statements: If-Else Explained in Depth - Salesforce Apex Tutorial Part 25
Learn Apex Control Flow Statements: Switch Statements Explained - Salesforce Apex Tutorial Part 26
While Loop Tutorial (Beginner-Friendly) | Control Flow Statements - Salesforce Apex Tutorial Part 27
Do-While Loop Tutorial (Newbie Friendly) | Control Flow Statement - Salesforce Apex Tutorial Part 28
For Loop Tutorial (Beginner-Friendly) | Control Flow Statements - Salesforce Apex Tutorial Part 29
Break and Continue Keywords in Loop | Control Flow Statements - Salesforce Apex Tutorial Part 30
Check out the tutorials and let me know your feedback in the comments down below.
Happy Trailblazing!!
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