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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...ted, byte[] passwordBytes)
{
byte[] encryptedBytes = null;
// Set your salt here, change it to meet your flavor:
// The salt bytes must be at least 8 bytes.
byte[] saltBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
using (MemoryStream ms = new MemoryStream())
{
us...
Make virtualenv inherit specific packages from your global site-packages
...ages visible, not all except for shadowed packages. Whitelisting a limited set would be much safer than whitelisting everything because it allows to guarantee that all packages must exist in the venv except for the explicitly whitelisted ones.
– bluenote10
Oct ...
Get hostname of current request in node.js Express
...lthough this will work to get the machine's hostname, I can have a machine set up to answer to multiple hosts, so this wouldn't be accurate.
– Jesse
Feb 22 '12 at 18:07
7
...
AngularJS check if form is valid in controller
...
Here is another solution
Set a hidden scope variable in your html then you can use it from your controller:
<span style="display:none" >{{ formValid = myForm.$valid}}</span>
Here is the full working example:
angular.module('App', [...
Postgres dump of only parts of tables for a dev snapshot
...
On your larger tables you can use the COPY command to pull out subsets...
COPY (SELECT * FROM mytable WHERE ...) TO '/tmp/myfile.tsv'
COPY mytable FROM 'myfile.tsv'
https://www.postgresql.org/docs/current/static/sql-copy.html
You should consider maintaining a set of development data ra...
Why does Typescript use the keyword “export” to make classes and interfaces public?
...public", but asides from "export/private/protected" being a poorly matched set of access modifiers, I believe there is a subtle difference between the two that explains this.
In TypeScript, marking a class member as public or private has no effect on the generated JavaScript. It is simply a design ...
How to modify PATH for Homebrew?
...
Recent versions of homebrew day: Consider setting your PATH so that /usr/local/bin occurs before /usr/bin. Here is a one-liner: echo export PATH="/usr/local/bin:$PATH" >> ~/.bash_profile. Which is basically what this answer suggests.
– nac...
What are “decorators” and how are they used?
...
Applications
In addition to @JBland answer.
Application wide locale settings :-
You can find an example here
Changiging default behaviour of and existing implementation of a service by angular service :-
You can find an eample here
Switching behavior of a function in different environments....
GraphViz - How to connect subgraphs?
...ster (instead of the cluster's built-in "label" attribute, which should be set to the empty string (in Python, label='""'). This means I'm no longer adding edges that connect clusters directly, but it works in my particular situation.
...
Why do we need argc while there is always a null at the end of argv?
...uts(argv[i]);
}
return 0;
}
In standard C, with common warnings settings, unused parameter generates warning, which can be fixed by a statement like (void)argc; which causes the name to be used without generating any code.
argc is nice to have, because otherwise many programs would need ...