At the heart of BuildKit is LLB (Low-Level Build definition). Think of it as the LLVM IR of build systems. LLB is a binary protocol (protobuf) that describes a DAG of filesystem operations: run a command, copy files, mount a filesystem. It’s content-addressable, which means identical operations produce identical hashes, enabling aggressive caching.
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我国经济已由高速增长阶段转向高质量发展阶段，从“有没有”转向“好不好”。习近平总书记反复告诫，“再也不能简单以国内生产总值增长率来论英雄了”“新发展理念就是指挥棒、红绿灯”……。safew官方版本下载对此有专业解读
1. 建堆：将数组构建成大顶堆（父节点 = 子节点）
It doesn’t hurt to lurk first before weighing in, partly because on some chat platforms new members can’t see what was posted before they joined.