hash

How to compute a hash of assembly, so that this hash could be used to tell if the code in the assembly has changed?

由 断了今生、忘了曾经 提交于 2019-12-25 09:06:19
问题 The problem is that rebuilding exactly the same code generates a different assembly when compared with the result of the previous build. Why do I need this? I have a T4 template that generates certain source code from the given contract assembly. That source code is checked in into VCS, even though it is generated. This is because the contract assembly changes relatively infrequently. However, when it does change, I would like to fail the build as long as the aforementioned T4 template is not

Ruby combine elements in hash

由 ＊爱你＆永不变心＊ 提交于 2019-12-25 08:59:37
问题 I have a has that looks like this: data = {abc -> [[date1, val1], [date2,val2]], def -> [[date1,val3], [date2,val4]]} I want to join the abc and def elements so it's like this: data = {join -> [[date1, val1+val3], [date2, val2+val4]] } How do I go about this. Note that there are other elements in the hash that should not be modified. 回答1: I am assuming that abc , def , and join are actually Symbols. a = Hash[data.delete(:abc)] # extract data[:abc] and convert it to a Hash ("a") b = Hash[data

how do i find a hash for a chunk of file without having to save the chunk in a separate file?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-25 07:26:57
问题 I want to find a hash for a chunk of file and save that hash in another file. I want to do it directly without having to save the chunk in a separate file.. here is my program. Const chunksize = 1024000000 dim istream,ostream Sub WriteChunk(data) Set oStream = CreateObject("ADODB.Stream") oStream.Open oStream.Type = 1 oStream.Write data Dim WshShell, oExec, input,objfile2,str1 Set WshShell = CreateObject("WScript.Shell") Set oExec = WshShell.exec("C:\Users\Administrator\desktop\experimenting

How to ensure that client created IDs aren't human-meaningful with a hash?

由 对着背影说爱祢 提交于 2019-12-25 07:19:12
问题 I want to allow untrused clients to create fairly short IDs, but enforce that they aren't human-meaningful (e.g. "l34fa75ljasd" is OK but "canada-is-evil" is not). One approach to doing this would be to have the client create a value, hash it, and then use the hashed value as the ID (first suggested in this question). I'm not sure what the best way to implement this is though. The simplest approach I can think of would be for the client to create a random string, hash it with something like

Invalid Key Hash, The Key Hash does not match - Android FB login

由 微笑、不失礼 提交于 2019-12-25 07:03:40
问题 I try to generate a key hash for my production android app, I use the steps provided by the Facebook Developer documentation. snipet from FB docs: keytool -exportcert -alias fbreleasekey -keystore /Mobile\ Development/gastro_key | openssl sha1 -binary | openssl base64 I use the same keystore file which I have used to sign my app, it asks for a password while generating, and outputs a key hash. But When I add this to my FB dev. settings I get the same error telling me that they do not match

Perl hash (could be a hash of hashes)

由 Deadly 提交于 2019-12-25 06:54:05
问题 working in perl I have managed to write a program that reads from a file usernames. Each username has logged in and out and these logs have been recorded. For example: maclawty796 pts/1 ip-64-134-238-2. Fri Oct 21 14:23 - 14:25 maclawty796 pts/2 10.1.28.122 Fri Oct 21 09:42 - 09:55 ehowe pts/3 10.1.28.204 Fri Oct 21 09:28 - 09:29 As you can see, the users may be logged twice. I am trying to not unify the information of all these accounts by username and month. For example: maclawty796 Oct xxx

How can I get a SQL Server md5 hash to match a previous php md5 hash?

由 故事扮演 提交于 2019-12-25 06:46:35
问题 I have a SQL Server 2014 table filled with MD5 hashses generated by php using the php $hash = md5($password); command. Now that we are moving to a tighter security model, I would like to be able to within a Stored Procedure take a password and match it to the previously stored md5 hash. Problem comes when the md5 hash returned by SQL is different than the one returned by php. When I use SELECT username, [password], master.sys.fn_varbintohexsubstring(0, HASHBYTES('MD5', CONVERT(VARCHAR(32),

How to change an integer into a string with specified character set in JavaScript

由 大憨熊 提交于 2019-12-25 06:46:16
问题 Given an integer input var i = 1234567890 based on the output of a hash function, I need to create a shortened, case sensitive alphanumeric string. This is for purposes of having a short URL with a case-sensitive hashed parameter such as http://example.com/?hash=1M0nlPk . JavaScript's i.toString(36) would use characters 0-9 and a-z. That's part of the way to a solution. However, I need to operate on a character set of unknown or configureable length, e.g. 012abcABC . How could I convert an

Hash/Array to Active Record

由 假如想象 提交于 2019-12-25 06:33:52
问题 I have been searching everywhere but I can't seem to find this problem anywhere. In Rails 5.0.0.beta3 I need to sort a my @record = user.records with an association and it's record. The sort goes something like this. @record = @record.sort_by { |rec| If user.fav_record.find(rec.id) User.fav_record(rec.id).created_at Else rec.created_at End This is just an example of what I do. But everything sorts fine. The problem: This returns an array and not an Active Record Class. I've tried everything

Java8 HashMap源码分析

由 与世无争的帅哥 提交于 2019-12-25 05:42:14
java.util.HashMap 是最常用的java容器类之一, 它是一个线程不安全的容器. 本文对JDK1.8.0中的HashMap实现源码进行分析. HashMap 使用位运算巧妙的进行散列并使用链地址法处理冲突. 自JDK1.8后, 若表中某个位置元素数超过阈值 则会将其自动转换为红黑树来提高检索效率. HashMap 中的迭代器同样采用 fail-fast 机制, 即若迭代过程中容器发生结构性改变, 则会终止迭代. HashMap 主要有三个视图接口 keySet() , values() , entrySet() . 它们都是基于迭代器实现的, 并不实际存储数据. 哈希表 自JDK1.8.0开始HashMap使用静态内部类 Node 来存储键值对结构, 不再使用 Map.Entry : static class Node<K,V> implements Map.Entry<K,V> { final int hash; final K key; V value; Node<K,V> next; Node(int hash, K key, V value, Node<K,V> next) {...} public final K getKey() { return key; } public final V getValue() { return value; }
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