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How to hash some string with sha256 in Java?
...an I hash some string with sha256 in Java? Does anybody know of any free library for this?
15 Answers
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Rails: update_attribute vs update_attributes
...ource you will get following code
# File vendor/rails/activerecord/lib/active_record/base.rb, line 2614
2614: def update_attribute(name, value)
2615: send(name.to_s + '=', value)
2616: save(false)
2617: end
and now refer update_attributes and look at its code yo...
Log to the base 2 in python
...ntroduced in 3.3. Can you confirm it is only in 3.4? docs.python.org/3.3/library/math.html
– ZaydH
Apr 18 '19 at 21:33
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Given a URL to a text file, what is the simplest way to read the contents of the text file?
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Edit 09/2016: In Python 3 and up use urllib.request instead of urllib2
Actually the simplest way is:
import urllib2 # the lib that handles the url stuff
data = urllib2.urlopen(target_url) # it's a file like object and works just like a file
for line in data: #...
Get current date/time in seconds
.../ 1000)); // 1443535752
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
jQuery
console.log(Math.floor($.now() / 1000)); // 1443535752
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js">...
Error Dropping Database (Can't rmdir '.test\', errno: 17)
...abase is represented by a directory under the data directory (usually /var/lib/mysql), and the directory is intended for storage of table data.
The DROP DATABASE statement will remove all table files and then remove the directory that represented the database. It will not, however, remove non-table...
linux svn搭建配置及svn命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...hz, passwd, svnserve.conf
其中authz 是权限控制，可以设置哪些用户可以访问哪些目录, passwd是设置用户和密码的, svnserve是设置svn相关的操作。
2 .1先设置passwd
[root@www ~]# vi passwd
[users]
# harry = harryssecret
# sally = s...
Uncaught TypeError: undefined is not a function on loading jquery-min.js
... How do we resolve this if we see this error while working with a library? I am trying to use 2.3.2/js/bootstrap.min.js and /1.4.6/bootstrap-editable/js/bootstrap-editable.min.js
– codeObserver
Oct 25 '14 at 2:35
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Can I use CoffeeScript instead of JS for node.js?
...o require them as if they were JavaScript files. For instance, if you have lib.coffee in a directory, you can write
require './lib'
from another CoffeeScript file in the same directory. (In order to do this from a JavaScript file, you'll have to add require 'coffee-script' at the top.) So, you ne...
C++ compiling on Windows and Linux: ifdef switch [duplicate]
...t all the macros are still listed in the documentation here: boost.org/doc/libs/release/libs/predef/doc/html/index.html
– rubenvb
Mar 26 '16 at 12:43
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