Using for Loops
Explore how to use Dart's indexed and for-in loops to automate repetitive tasks and traverse collections efficiently. Learn to integrate conditions within loops to filter data, gaining control over iteration and improving code clarity.
Imagine having to print 100 copies of a document. Instead of pressing the print button 100 times, it is much more efficient to tell the printer to print 100 copies at once. The printer performs an operation repeatedly in a loop until it reaches its goal.
In computer programming, we frequently encounter scenarios where we need to execute a block of code multiple times. Dart provides for loops for this exact purpose.
The indexed for loop
The indexed for loop allows us to specify a precise range of numbers over which we want our loop to run. We must define three components within the parentheses, separated by semicolons:
Initialization: The starting value of our iterator variable (e.g.,
var i = 0).Condition: The boundary that must evaluate to
truefor the loop to continue (e.g.,i < 5).Update: ...