library

openopen in new window

Open stuff like URLs, files, executables. Cross-platform,It uses the command startopen in new window on Windows.

define-lazy-propopen in new window

Define a lazily evaluated property on an object

Useful when the value of a property is expensive to generate, so you want to delay the computation until the property is needed. For example, improving startup performance by deferring nonessential operations.

ref

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Contributors: lizonglin, zonglinlee