LESSON 38 OF 52 · CHAPTER 05
Constant Expressions
Exported constants, chained imports and a function's default argument
02-constant-expressions.srp
import "_support/constants.srp" as constants;
pub bind doubled = constants.answer * 2;
print(constants.label, constants.answer, doubled, constants.ready, constants.ratio, constants.adjust());
stdout
constant expressions 42 84 true 0.75 42
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
Exported constants, chained imports and a function's default argument
Expected behavior
constant expressions 42 84 true 0.75 42
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.
आयातित कॉन्स्टैंट अभिव्यक्ति
_support/constants.srp एक अन्य _support/constant_base.srp को आयात करता है। pub bind answer जैसे नाम दूसरे मॉड्यूल में उपलब्ध होते हैं। ऊपर की फ़ाइल में doubled इसी मान को दोगुना करता है; constants.adjust() डिफ़ॉल्ट आर्गुमेंट वाला फ़ंक्शन है।
आउटपुट: constant expressions 42 84 true 0.75 42।
अभ्यास: answer और doubled के बीच संबंध समझाएँ; pub की भूमिका पहचानें।
Explanations are sourced from the project's English chapter guide and हिन्दी अध्याय. The Scarp program and output are unchanged.
SOURCE-BACKED SELF-CHECK · स्रोत-आधारित अभ्यास
Quick checkpoint / त्वरित अभ्यास
What is the value of doubled when constants.answer is 42?constants.answer का मान 42 होने पर doubled का मान क्या होता है?
Reveal the source-backed answer / सही उत्तर देखें
84 — The exported binding doubled is constants.answer multiplied by 2. With answer = 42, doubled is 84.84 — exported binding doubled में constants.answer को 2 से गुणा किया गया है। 42 × 2 = 84।
This question checks understanding of a recorded compiler output. It does not run Scarp in the browser. यह प्रश्न सत्यापित आउटपुट पर आधारित है; ब्राउज़र में Scarp नहीं चलता।
LEARNING PROGRESS
Keep your place
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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/05-modules/02-constant-expressions.srp
scarp exec examples/05-modules/02-constant-expressions.srpThe website does not run code. Read the CLI guide ↗
Pinned compiler: Scarp v0.0.6-alpha.3
· ceff07d9014f. No simulated output.