curriculum/challenges/english/blocks/learn-about-speculation-and-requests/67ee56687454b01015480e90.md
Listen to the audio and complete the sentence below.
You used a simple BLANK, but given our use case, you should have used a BLANK instead.
for loop
This two-word phrase refers to the loop that is used when you know how many times it should run.
while loop
This two-word phrase refers to the loop that is used when the number of repetitions depends on a condition.
A for loop is useful when you know how many times the loop should run. For example:
A for loop is useful for going through a list. - You can use it to check each item in a list.
The for loop stops when it reaches the last item. - The loop ends when there are no more items.
A while loop is better when the number of repetitions depends on a condition. For example:
A while loop runs until a condition is false. - The loop continues as long as the rule is true.
Be careful, a while loop can run forever! - If you don't stop it, the loop won't end.
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"characters": [
{
"character": "Sophie",
"position": {
"x": 50,
"y": 0,
"z": 1.4
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"opacity": 0
}
],
"audio": {
"filename": "B1_17-1.mp3",
"startTime": 1,
"startTimestamp": 12.0,
"finishTimestamp": 16.36
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"commands": [
{
"character": "Sophie",
"opacity": 1,
"startTime": 0
},
{
"character": "Sophie",
"startTime": 1,
"finishTime": 5.26,
"dialogue": {
"text": "You used a simple for loop, but given our use case, you should have used a while loop instead.",
"align": "center"
}
},
{
"character": "Sophie",
"opacity": 0,
"startTime": 5.76
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}