LESSON 28 OF 52 · CHAPTER 04
Typed Declarations
Type annotations for vector/float/tile/boolean/string
04-typed-declarations.srp
bind samples: vector = [1.0, 2.0, 3.0];
var total: float = sum(samples);
total += 0.5;
bind grid: tile = tile(samples, 1, 3);
bind ready: boolean = width(grid) == 3;
bind label: string = "typed";
print(label, ready, total);
stdout
typed true 6.5
Write what you expect this program to print. Check prediction for a line-level hint without revealing the answer, or reveal the verified output when ready. This checks displayed text only; it does not run Scarp or save your input.
UNDERSTAND THE CODE
Explanation & practice
What this example teaches
Type annotations for vector/float/tile/boolean/string
Expected behavior
typed true 6.5
Practice: Read the source before looking at the output. Predict the values and their order, then use the pinned compiler to execute this lesson and compare the exact fixture. Identify which operation produces the result.
टाइप एनोटेशन
bind samples: vector, var total: float, bind grid: tile, bind ready: boolean और bind label: string से प्रकार स्पष्ट होते हैं। total में बाद में 0.5 जुड़ता है।
आउटपुट: typed true 6.5।
अभ्यास: width(grid) == 3 बूलियन कैसे बनाता है?
Explanations are sourced from the project's English chapter guide and हिन्दी अध्याय. The Scarp program and output are unchanged.
LEARNING PROGRESS
Keep your place
Mark this lesson complete when you are ready.
Only saved in this browser. No account or tracking.
TRY IT LOCALLY
Verify, then execute
Use the pinned compiler from the course root. Keep any imported _support files next to the source.
scarp verify examples/04-collections/04-typed-declarations.srp
scarp exec examples/04-collections/04-typed-declarations.srpThe website does not run code. Read the CLI guide ↗
Pinned compiler: Scarp v0.0.6-alpha.3
· ceff07d9014f. No simulated output.