42 lines
1.5 KiB
TypeScript
42 lines
1.5 KiB
TypeScript
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/**
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* An interface for a builder object that allows a large text string to be constructed incrementally by appending
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* small chunks.
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*
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* @remarks
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*
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* {@link StringBuilder} is the default implementation of this contract.
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*/
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export interface IStringBuilder {
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/**
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* Append the specified text to the buffer.
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*/
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append(text: string): void;
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/**
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* Returns a single string containing all the text that was appended to the buffer so far.
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*
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* @remarks
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*
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* This is a potentially expensive operation.
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*/
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toString(): string;
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}
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/**
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* This class allows a large text string to be constructed incrementally by appending small chunks. The final
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* string can be obtained by calling StringBuilder.toString().
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*
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* @remarks
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* A naive approach might use the `+=` operator to append strings: This would have the downside of copying
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* the entire string each time a chunk is appended, resulting in `O(n^2)` bytes of memory being allocated
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* (and later freed by the garbage collector), and many of the allocations could be very large objects.
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* StringBuilder avoids this overhead by accumulating the chunks in an array, and efficiently joining them
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* when `getText()` is finally called.
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*/
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export declare class StringBuilder implements IStringBuilder {
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private _chunks;
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constructor();
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/** {@inheritdoc IStringBuilder.append} */
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append(text: string): void;
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/** {@inheritdoc IStringBuilder.toString} */
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toString(): string;
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}
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//# sourceMappingURL=StringBuilder.d.ts.map
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