hash code

基本解釋

If a key's hash code were to change while it was in a collection, some unpredictable and confusing consequences could follow.
如果當(dāng)關(guān)鍵字在集合中時(shí)它的散列代碼被更改，那么將產(chǎn)生一些不可預(yù)測(cè)和容易混淆的結(jié)果。
Furthermore, before the CM agent stores the object, it executes a query in the repository if the same hash code has already been stored.
而且，在 CM 代理存儲(chǔ)對(duì)象之前，它在儲(chǔ)存庫(kù)中執(zhí)行一個(gè)查詢，看儲(chǔ)存庫(kù)中是否已經(jīng)存儲(chǔ)了相同的散列碼。
Changing these values would change the hash code, which would in turn break any hash table or dictionary that the object happened to be stored in.
而改變那些值的同時(shí)也改變了哈希碼，然后會(huì)破壞一些哈希表或者恰好儲(chǔ)存了對(duì)象的字典。

So what you typically do and a hash case is you design your code to deal with that.
你所需要做的就是通過(guò)設(shè)計(jì)你的代碼,來(lái)解決上面的問(wèn)題。
麻省理工公開(kāi)課 - 計(jì)算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選
So let's look at the second example, all right, I keep doing that -- this piece of code from here to here gives me a way of now creating a hash table of size 256.
所以讓我們來(lái)看一下第二個(gè)例子，好的，我繼續(xù)做那件事,這段代碼中從這里到這里,是創(chuàng)建一個(gè)大小為256的哈希表。
麻省理工公開(kāi)課 - 計(jì)算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選

At the same time, it would provide an initial effort to reduce the deficit, which the negotiators call a down payment, as Congressional tax-writing committees hash out a broad overhaul of the tax code.
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hash -code 散列代碼;哈希代碼;雜湊程式碼
default hash code provider 默認(rèn)哈希代碼提供程序;預(yù)設(shè)雜湊碼提供者;默認(rèn)哈希代碼供給程序;默認(rèn)雜湊代碼供應(yīng)商
Hash Message Authentication Code 散列消息鑒別碼
default t hash code provider 默認(rèn)哈希代碼提供程序
default case -insensitive hash code provider 不區(qū)分大小寫的默認(rèn)哈希代碼提供程序