hash

来自法语hacher,剁，剁碎，词源同hatchet.引申词义跺碎的肉丁土豆，拼定比较bake,batch.

hash (v.)

1650s, "to hack, chop into small pieces," from French hacher "chop up" (14c.), from Old French hache "ax" (see hatchet). Hash browns (1926) is short for hashed browned potatoes (1886), with the -ed omitted, as in mash potatoes. The hash marks on a football field were so called by 1954, from their similarity to hash marks, armed forces slang for "service stripes on the sleeve of a military uniform" (1909), which supposedly were called that because they mark the number of years one has had free food (that is, hash (n.1)) from the Army; but perhaps there is a connection with the noun form of hatch (v.2).

hash (n.2)

short for hashish, 1959.

hash (n.1)

"a stew of meat cut into small pieces," 1660s, from hash (v.). Meaning "a mix, a mess" is from 1735.

1. Watson had made a thorough hash of it.

沃森把这事儿弄得一团糟。

2. I made a complete hash of my driving test.

我的驾驶考试考得一团糟.

3. A two - layer Hash structure which supports dynamic ADT dictionary is proposed.

2.提出两层的Hash构架,支持动态ADT字典.

4. At each offset in the file the 32 - bit rolling checksum and its 16 - bit hash are calculated.

文件中的每个偏移都会被计算32-bit的滚动校验和及它的16-bit的hash值.

5. Nevertheless, like all hash tables, its performance depends on the distribution of hashes.

不仅如此, 像所有的hash表, 其性能依赖于哈希分布.