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What does "dollar sign" mean in programming?
dollar sign is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The $ character. In shell scripts it prefixes variable names ($HOME). In JavaScript template literals it introduces interpolated expressions (${value}). In jQuery it the conventional alias for the library.
Example
"console.log(`Total: $${price}`); // first $ is literal, second starts interpolation"
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